ly/music-functions-init.ly

   1 % -*-Scheme-*-
   2
   3 \version "2.10.0"
   4
   5
   6 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   7 %% this file is alphabetically sorted.
   8 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   9
  10 %% need SRFI-1 filter
  11
  12 #(use-modules (srfi srfi-1))
  13
  14 acciaccatura =
  15 #(def-grace-function startAcciaccaturaMusic stopAcciaccaturaMusic)
  16
  17 addQuote =
  18 #(define-music-function (parser location name music) (string? ly:music?)
  19    (_i "Add a piece of music to be quoted ")
  20    (add-quotable parser name music)
  21    (make-music 'SequentialMusic 'void #t))
  22
  23 afterGraceFraction =
  24 #(cons 6 8)
  25
  26 afterGrace =
  27 #(define-music-function
  28   (parser location main grace)
  29   (ly:music? ly:music?)
  30
  31   (let*
  32       ((main-length (ly:music-length main))
  33        (fraction  (ly:parser-lookup parser 'afterGraceFraction)))
  34
  35     (make-simultaneous-music
  36      (list
  37       main
  38       (make-sequential-music
  39        (list
  40
  41         (make-music 'SkipMusic
  42                     'duration (ly:make-duration
  43                                0 0
  44                                (* (ly:moment-main-numerator main-length)
  45                                   (car fraction))
  46                                (* (ly:moment-main-denominator main-length)
  47                                   (cdr fraction)) ))
  48         (make-music 'GraceMusic
  49                     'element grace)))))))
  50
  51 applyMusic =
  52 #(define-music-function (parser location func music) (procedure? ly:music?)
  53                (func music))
  54
  55
  56 applyOutput =
  57 #(define-music-function (parser location ctx proc) (symbol? procedure?)
  58                 (make-music 'ApplyOutputEvent
  59                   'origin location
  60                   'procedure proc
  61                   'context-type ctx))
  62
  63 appoggiatura =
  64 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic)
  65
  66
  67
  68 % for regression testing purposes.
  69 assertBeamQuant =
  70 #(define-music-function (parser location l r) (pair? pair?)
  71   (make-grob-property-override 'Beam 'positions
  72    (ly:make-simple-closure
  73     (ly:make-simple-closure
  74      (append
  75       (list chain-grob-member-functions `(,cons 0 0))
  76       (check-quant-callbacks l r))))))
  77
  78 % for regression testing purposes.
  79 assertBeamSlope =
  80 #(define-music-function (parser location comp) (procedure?)
  81   (make-grob-property-override 'Beam 'positions
  82    (ly:make-simple-closure
  83     (ly:make-simple-closure
  84      (append
  85       (list chain-grob-member-functions `(,cons 0 0))
  86       (check-slope-callbacks comp))))))
  87
  88
  89
  90 autochange =
  91 #(define-music-function (parser location music) (ly:music?)
  92                (make-autochange-music parser music))
  93
  94 applyContext =
  95 #(define-music-function (parser location proc) (procedure?)
  96                  (make-music 'ApplyContext
  97                    'origin location
  98                    'procedure proc))
  99
 100
 101 balloonGrobText =
 102 #(define-music-function (parser location grob-name offset text) (symbol? number-pair? markup?)
 103
 104     (make-music 'AnnotateOutputEvent
 105                 'symbol grob-name
 106                 'X-offset (car offset)
 107                 'Y-offset (cdr offset)
 108                 'text text))
 109
 110 balloonText =
 111 #(define-music-function (parser location offset text) (number-pair? markup?)
 112
 113     (make-music 'AnnotateOutputEvent
 114                 'X-offset (car offset)
 115                 'Y-offset (cdr offset)
 116                 'text text))
 117
 118
 119 bar =
 120 #(define-music-function (parser location type)
 121    (string?)
 122    (context-spec-music
 123     (make-property-set 'whichBar type)
 124     'Timing))
 125
 126
 127 barNumberCheck =
 128 #(define-music-function (parser location n) (integer?)
 129    (make-music 'ApplyContext
 130                'origin location
 131                'procedure
 132                (lambda (c)
 133                  (let*
 134                      ((cbn (ly:context-property c 'currentBarNumber)))
 135                    (if (and  (number? cbn) (not (= cbn n)))
 136                        (ly:input-message location "Barcheck failed got ~a expect ~a"
 137                                          cbn n))))))
 138
 139
 140 bendAfter =
 141 #(define-music-function (parser location delta) (real?)
 142
 143   (make-music 'BendAfterEvent
 144    'delta-step delta))
 145
 146 %% why a function?
 147 breathe =
 148 #(define-music-function (parser location) ()
 149             (make-music 'EventChord
 150               'origin location
 151               'elements (list (make-music 'BreathingEvent))))
 152
 153
 154 clef =
 155 #(define-music-function (parser location type)
 156    (string?)
 157    (_i "Set the current clef.")
 158
 159    (make-clef-set type))
 160
 161
 162 cueDuring =
 163 #(define-music-function
 164   (parser location what dir main-music)
 165   (string? ly:dir? ly:music?)
 166   (make-music 'QuoteMusic
 167               'element main-music
 168               'quoted-context-type 'Voice
 169               'quoted-context-id "cue"
 170               'quoted-music-name what
 171               'quoted-voice-direction dir
 172               'origin location))
 173
 174 displayLilyMusic =
 175 #(define-music-function (parser location music) (ly:music?)
 176    (newline)
 177    (display-lily-music music parser)
 178    music)
 179
 180 displayMusic =
 181 #(define-music-function (parser location music) (ly:music?)
 182    (newline)
 183    (display-scheme-music music)
 184    music)
 185
 186
 187 endSpanners =
 188 #(define-music-function (parser location music) (ly:music?)
 189    (if (eq? (ly:music-property music 'name) 'EventChord)
 190        (let*
 191            ((elts (ly:music-property music 'elements))
 192             (start-span-evs (filter (lambda (ev)
 193                                 (and (music-has-type ev 'span-event)
 194                                      (equal? (ly:music-property ev 'span-direction)
 195                                              START)))
 196                               elts))
 197             (stop-span-evs
 198              (map (lambda (m)
 199                     (let* ((c (music-clone m)))
 200                       (set! (ly:music-property c 'span-direction) STOP)
 201                       c))
 202                   start-span-evs))
 203             (end-ev-chord (make-music 'EventChord
 204                                       'elements stop-span-evs))
 205             (total (make-music 'SequentialMusic
 206                                'elements (list music
 207                                                end-ev-chord))))
 208          total)
 209
 210        (ly:input-message location (_ "argument endSpanners is not an EventChord: ~a" music))))
 211
 212 featherDurations=
 213 #(define-music-function (parser location factor argument) (ly:moment? ly:music?)
 214    (_i "Rearrange durations in ARGUMENT so there is an
 215 acceleration/deceleration. ")
 216
 217    (let*
 218        ((orig-duration (ly:music-length argument))
 219         (multiplier (ly:make-moment 1 1)))
 220
 221      (music-map
 222       (lambda (mus)
 223         (if (and (eq? (ly:music-property mus 'name) 'EventChord)
 224                  (< 0 (ly:moment-main-denominator (ly:music-length mus))))
 225             (begin
 226               (ly:music-compress mus multiplier)
 227               (set! multiplier (ly:moment-mul factor multiplier)))
 228             )
 229         mus)
 230       argument)
 231
 232      (ly:music-compress
 233       argument
 234       (ly:moment-div orig-duration (ly:music-length argument)))
 235
 236      argument))
 237
 238 grace =
 239 #(def-grace-function startGraceMusic stopGraceMusic)
 240
 241
 242 "instrument-definitions" = #'()
 243
 244 addInstrumentDefinition =
 245 #(define-music-function
 246    (parser location name lst) (string? list?)
 247
 248    (set! instrument-definitions (acons name lst instrument-definitions))
 249
 250    (make-music 'SequentialMusic 'void #t))
 251
 252
 253 instrumentSwitch =
 254 #(define-music-function
 255    (parser location name) (string?)
 256    (let*
 257        ((handle  (assoc name instrument-definitions))
 258         (instrument-def (if handle (cdr handle) '()))
 259         )
 260
 261      (if (not handle)
 262          (ly:input-message "No such instrument: ~a" name))
 263      (context-spec-music
 264       (make-music 'SimultaneousMusic
 265                   'elements
 266                   (map (lambda (kv)
 267                          (make-property-set
 268                           (car kv)
 269                           (cdr kv)))
 270                        instrument-def))
 271       'Staff)))
 272
 273
 274 %% Parser used to read page-layout file, and then retreive score tweaks.
 275 #(define page-layout-parser #f)
 276
 277 includePageLayoutFile =
 278 #(define-music-function (parser location) ()
 279    (_i "If page breaks and tweak dump is not asked, and the file
 280 <basename>-page-layout.ly exists, include it.")
 281    (if (not (ly:get-option 'dump-tweaks))
 282        (let ((tweak-filename (format #f "~a-page-layout.ly"
 283                                      (ly:parser-output-name parser))))
 284          (if (access? tweak-filename R_OK)
 285              (begin
 286                (ly:message "Including tweak file ~a" tweak-filename)
 287                (set! page-layout-parser (ly:parser-clone parser))
 288                (ly:parser-parse-string page-layout-parser
 289                                        (format #f "\\include \"~a\""
 290                                                tweak-filename))))))
 291    (make-music 'SequentialMusic 'void #t))
 292
 293
 294
 295 keepWithTag =
 296 #(define-music-function
 297   (parser location tag music) (symbol? ly:music?)
 298   (music-filter
 299    (lambda (m)
 300     (let* ((tags (ly:music-property m 'tags))
 301            (res (memq tag tags)))
 302      (or
 303       (eq? tags '())
 304       res)))
 305    music))
 306
 307 removeWithTag =
 308 #(define-music-function
 309   (parser location tag music) (symbol? ly:music?)
 310   (music-filter
 311    (lambda (m)
 312     (let* ((tags (ly:music-property m 'tags))
 313            (res (memq tag tags)))
 314      (not res)))
 315  music))
 316
 317 killCues =
 318 #(define-music-function
 319    (parser location music)
 320    (ly:music?)
 321    (music-map
 322     (lambda (mus)
 323       (if (string? (ly:music-property mus 'quoted-music-name))
 324           (ly:music-property mus 'element)
 325           mus)) music))
 326
 327 label =
 328 #(define-music-function (parser location label) (symbol?)
 329    (_i "Place a bookmarking label, either at top-level or inside music.")
 330    (make-music 'EventChord
 331                'page-marker #t
 332                'page-label label
 333                'elements (list (make-music 'LabelEvent
 334                                            'page-label label))))
 335
 336 makeClusters =
 337 #(define-music-function
 338                 (parser location arg) (ly:music?)
 339                 (music-map note-to-cluster arg))
 340
 341 musicMap =
 342 #(define-music-function (parser location proc mus) (procedure? ly:music?)
 343              (music-map proc mus))
 344
 345
 346
 347 oldaddlyrics =
 348 #(define-music-function (parser location music lyrics) (ly:music? ly:music?)
 349
 350               (make-music 'OldLyricCombineMusic
 351                           'origin location
 352                           'elements (list music lyrics)))
 353
 354
 355 overrideProperty =
 356 #(define-music-function (parser location name property value)
 357    (string? symbol? scheme?)
 358
 359
 360    (_i "Set @var{property} to @var{value} in all grobs named @var{name}.
 361 The @var{name} argument is a string of the form @code{\"Context.GrobName\"}
 362 or @code{\"GrobName\"}")
 363
 364    (let*
 365        ((name-components (string-split name #\.))
 366         (context-name 'Bottom)
 367         (grob-name #f))
 368
 369      (if (> 2 (length name-components))
 370          (set! grob-name (string->symbol (car name-components)))
 371          (begin
 372            (set! grob-name (string->symbol (list-ref name-components 1)))
 373            (set! context-name (string->symbol (list-ref name-components 0)))))
 374
 375      (make-music 'ApplyOutputEvent
 376                  'origin location
 377                  'context-type context-name
 378                  'procedure
 379                  (lambda (grob orig-context context)
 380                    (if (equal?
 381                         (cdr (assoc 'name (ly:grob-property grob 'meta)))
 382                         grob-name)
 383                        (set! (ly:grob-property grob property) value))))))
 384
 385 %% These are music functions (iso music indentifiers), because music identifiers
 386 %% are not allowed at top-level.
 387 pageBreak =
 388 #(define-music-function (location parser) ()
 389    (_i "Force a page break. May be used at toplevel (ie between scores or
 390 markups), or inside a score.")
 391    (make-music 'EventChord
 392                'page-marker #t
 393                'line-break-permission 'force
 394                'page-break-permission 'force
 395                'elements (list (make-music 'LineBreakEvent
 396                                            'break-permission 'force)
 397                                (make-music 'PageBreakEvent
 398                                            'break-permission 'force))))
 399
 400 noPageBreak =
 401 #(define-music-function (location parser) ()
 402    (_i "Forbid a page break. May be used at toplevel (ie between scores or
 403 markups), or inside a score.")
 404    (make-music 'EventChord
 405                'page-marker #t
 406                'page-break-permission 'forbid
 407                'elements (list (make-music 'PageBreakEvent
 408                                            'break-permission '()))))
 409
 410 pageTurn =
 411 #(define-music-function (location parser) ()
 412    (_i "Force a page turn between two scores or top-level markups.")
 413    (make-music 'EventChord
 414                'page-marker #t
 415                'line-break-permission 'force
 416                'page-break-permission 'force
 417                'page-turn-permission 'force
 418                'elements (list (make-music 'LineBreakEvent
 419                                            'break-permission 'force)
 420                                (make-music 'PageBreakEvent
 421                                            'break-permission 'force)
 422                                (make-music 'PageTurnEvent
 423                                            'break-permission 'force))))
 424
 425 noPageTurn =
 426 #(define-music-function (location parser) ()
 427    (_i "Forbid a page turn. May be used at toplevel (ie between scores or
 428 markups), or inside a score.")
 429    (make-music 'EventChord
 430                'page-marker #t
 431                'page-turn-permission 'forbid
 432                'elements (list (make-music 'PageTurnEvent
 433                                            'break-permission '()))))
 434
 435 allowPageTurn =
 436 #(define-music-function (location parser) ()
 437    (_i "Allow a page turn. May be used at toplevel (ie between scores or
 438 markups), or inside a score.")
 439    (make-music 'EventChord
 440                'page-marker #t
 441                'page-turn-permission 'allow
 442                'elements (list (make-music 'PageTurnEvent
 443                                            'break-permission 'allow))))
 444
 445 %% Todo:
 446 %% doing
 447 %% define-music-function in a .scm causes crash.
 448
 449 octaveCheck =
 450 #(define-music-function (parser location pitch-note) (ly:music?)
 451    (_i "octave check")
 452
 453    (make-music 'RelativeOctaveCheck
 454                'origin location
 455                'pitch (pitch-of-note pitch-note)
 456            ))
 457
 458 ottava = #(define-music-function (parser location octave) (number?)
 459   (_i "set the octavation ")
 460   (make-ottava-set octave))
 461
 462 partcombine =
 463 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
 464                 (make-part-combine-music parser
 465                                          (list part1 part2)))
 466
 467
 468 pitchedTrill =
 469 #(define-music-function
 470    (parser location main-note secondary-note)
 471    (ly:music? ly:music?)
 472    (let*
 473        ((get-notes (lambda (ev-chord)
 474                      (filter
 475                       (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
 476                       (ly:music-property ev-chord 'elements))))
 477         (sec-note-events (get-notes secondary-note))
 478         (trill-events (filter (lambda (m) (music-has-type m 'trill-span-event))
 479                               (ly:music-property main-note 'elements))))
 480
 481      (if (pair? sec-note-events)
 482          (begin
 483            (let*
 484                ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
 485                 (forced (ly:music-property (car sec-note-events ) 'force-accidental)))
 486
 487              (if (ly:pitch? trill-pitch)
 488                  (for-each (lambda (m) (ly:music-set-property! m 'pitch trill-pitch))
 489                            trill-events)
 490                  (begin
 491                    (ly:warning (_ "Second argument of \\pitchedTrill should be single note: "))
 492                    (display sec-note-events)))
 493
 494              (if (eq? forced #t)
 495                  (for-each (lambda (m) (ly:music-set-property! m 'force-accidental forced))
 496                            trill-events)))))
 497      main-note))
 498
 499
 500
 501 %% for lambda*
 502 #(use-modules (ice-9 optargs))
 503
 504 parallelMusic =
 505 #(define-music-function (parser location voice-ids music) (list? ly:music?)
 506   (_i "Define parallel music sequences, separated by '|' (bar check signs),
 507 and assign them to the identifiers provided in @var{voice-ids}.
 508
 509 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
 510
 511 @var{music}: a music sequence, containing BarChecks as limiting expressions.
 512
 513 Example:
 514
 515 @verbatim
 516   \\parallelMusic #'(A B C) {
 517     c c | d d | e e |
 518     d d | e e | f f |
 519   }
 520 <==>
 521   A = { c c | d d | }
 522   B = { d d | e e | }
 523   C = { e e | f f | }
 524 @end verbatim
 525 ")
 526   (let* ((voices (apply circular-list (make-list (length voice-ids) (list))))
 527          (current-voices voices)
 528          (current-sequence (list)))
 529     ;;
 530     ;; utilities
 531     (define (push-music m)
 532       "Push the music expression into the current sequence"
 533       (set! current-sequence (cons m current-sequence)))
 534     (define (change-voice)
 535       "Stores the previously built sequence into the current voice and
 536        change to the following voice."
 537       (list-set! current-voices 0 (cons (make-music 'SequentialMusic
 538                                          'elements (reverse! current-sequence))
 539                                         (car current-voices)))
 540       (set! current-sequence (list))
 541       (set! current-voices (cdr current-voices)))
 542     (define (bar-check? m)
 543       "Checks whether m is a bar check."
 544       (eq? (ly:music-property m 'name) 'BarCheck))
 545     (define (music-origin music)
 546       "Recursively search an origin location stored in music."
 547       (cond ((null? music) #f)
 548             ((not (null? (ly:music-property music 'origin)))
 549              (ly:music-property music 'origin))
 550             (else (or (music-origin (ly:music-property music 'element))
 551                       (let ((origins (remove not (map music-origin
 552                                                       (ly:music-property music 'elements)))))
 553                         (and (not (null? origins)) (car origins)))))))
 554     ;;
 555     ;; first, split the music and fill in voices
 556     (map-in-order (lambda (m)
 557                     (push-music m)
 558                     (if (bar-check? m) (change-voice)))
 559                   (ly:music-property music 'elements))
 560     (if (not (null? current-sequence)) (change-voice))
 561     ;; un-circularize `voices' and reorder the voices
 562     (set! voices (map-in-order (lambda (dummy seqs)
 563                                  (reverse! seqs))
 564                                voice-ids voices))
 565     ;;
 566     ;; set origin location of each sequence in each voice
 567     ;; for better type error tracking
 568     (for-each (lambda (voice)
 569                 (for-each (lambda (seq)
 570                             (set! (ly:music-property seq 'origin)
 571                                   (or (music-origin seq) location)))
 572                           voice))
 573               voices)
 574     ;;
 575     ;; check sequence length
 576     (apply for-each (lambda* (#:rest seqs)
 577                       (let ((moment-reference (ly:music-length (car seqs))))
 578                         (for-each (lambda (seq moment)
 579                                     (if (not (equal? moment moment-reference))
 580                                         (ly:music-message seq
 581                                          "Bars in parallel music don't have the same length")))
 582                           seqs (map-in-order ly:music-length seqs))))
 583            voices)
 584    ;;
 585    ;; bind voice identifiers to the voices
 586    (map (lambda (voice-id voice)
 587           (ly:parser-define! parser voice-id
 588                              (make-music 'SequentialMusic
 589                                'origin location
 590                                'elements voice)))
 591         voice-ids voices))
 592  ;; Return an empty sequence. this function is actually a "void" function.
 593  (make-music 'SequentialMusic 'void #t))
 594
 595
 596
 597 parenthesize =
 598 #(define-music-function (parser loc arg) (ly:music?)
 599    (_i "Tag @var{arg} to be parenthesized.")
 600
 601    (if (memq 'event-chord (ly:music-property arg 'types))
 602      ; arg is an EventChord -> set the parenthesize property on all child notes and rests
 603      (map
 604        (lambda (ev)
 605          (if (or (memq 'note-event (ly:music-property ev 'types))
 606                  (memq 'rest-event (ly:music-property ev 'types)))
 607            (set! (ly:music-property ev 'parenthesize) #t)))
 608        (ly:music-property arg 'elements))
 609      ; No chord, simply set property for this expression:
 610      (set! (ly:music-property arg 'parenthesize) #t))
 611    arg)
 612
 613
 614 quoteDuring = #
 615 (define-music-function
 616   (parser location what main-music)
 617   (string? ly:music?)
 618   (make-music 'QuoteMusic
 619               'element main-music
 620               'quoted-music-name what
 621               'origin location))
 622
 623
 624
 625 resetRelativeOctave  =
 626 #(define-music-function
 627     (parser location reference-note)
 628     (ly:music?)
 629     (_i "Set the octave inside a \\relative section.")
 630
 631    (let*
 632     ((notes (ly:music-property reference-note 'elements))
 633      (pitch (ly:music-property (car notes) 'pitch)))
 634
 635     (set! (ly:music-property reference-note 'elements) '())
 636     (set! (ly:music-property reference-note
 637        'to-relative-callback)
 638        (lambda (music last-pitch)
 639         pitch))
 640
 641     reference-note))
 642
 643
 644 scaleDurations =
 645 #(define-music-function
 646                   (parser location fraction music) (number-pair? ly:music?)
 647                   (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction))))
 648
 649
 650
 651 shiftDurations =
 652 #(define-music-function (parser location dur dots arg) (integer? integer? ly:music?)
 653    (_i "")
 654
 655    (music-map
 656     (lambda (x)
 657       (shift-one-duration-log x dur dots)) arg))
 658
 659 spacingTweaks =
 660 #(define-music-function (parser location parameters) (list?)
 661    (_i "Set the system stretch, by reading the 'system-stretch property of
 662 the `parameters' assoc list.")
 663    #{
 664       \overrideProperty #"Score.NonMusicalPaperColumn"
 665         #'line-break-system-details
 666         #$(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
 667                 (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
 668    #})
 669
 670
 671 rightHandFinger =
 672 #(define-music-function (parser location finger) (number-or-string?)
 673    (_i "Define a StrokeFingerEvent")
 674
 675    (apply make-music
 676           (append
 677            (list
 678             'StrokeFingerEvent
 679             'origin location)
 680            (if  (string? finger)
 681                 (list 'text finger)
 682                 (list 'digit finger)))))
 683
 684 scoreTweak =
 685 #(define-music-function (parser location name) (string?)
 686    (_i "Include the score tweak, if exists.")
 687    (if (and page-layout-parser (not (ly:get-option 'dump-tweaks)))
 688        (let ((tweak-music (ly:parser-lookup page-layout-parser
 689                                             (string->symbol name))))
 690          (if (ly:music? tweak-music)
 691              tweak-music
 692              (make-music 'SequentialMusic)))
 693        (make-music 'SequentialMusic)))
 694
 695
 696 tag = #(define-music-function (parser location tag arg)
 697    (symbol? ly:music?)
 698
 699    (_i "Add @var{tag} to the @code{tags} property of @var{arg}.")
 700
 701    (set!
 702     (ly:music-property arg 'tags)
 703     (cons tag
 704           (ly:music-property arg 'tags)))
 705    arg)
 706
 707
 708
 709 transposedCueDuring =
 710 #(define-music-function
 711   (parser location what dir pitch-note main-music)
 712   (string? ly:dir? ly:music? ly:music?)
 713
 714   (_i "Insert notes from the part @var{what} into a voice called @code{cue},
 715 using the transposition defined by @var{pitch-note}.  This happens
 716 simultaneously with @var{main-music}, which is usually a rest.  The
 717 argument @var{dir} determines whether the cue notes should be notated
 718 as a first or second voice.")
 719
 720   (make-music 'QuoteMusic
 721               'element main-music
 722               'quoted-context-type 'Voice
 723               'quoted-context-id "cue"
 724               'quoted-music-name what
 725               'quoted-voice-direction dir
 726               'quoted-transposition (pitch-of-note pitch-note)
 727               'origin location))
 728
 729
 730
 731 transposition =
 732 #(define-music-function (parser location pitch-note) (ly:music?)
 733    (_i "Set instrument transposition")
 734
 735    (context-spec-music
 736     (make-property-set 'instrumentTransposition
 737                        (ly:pitch-negate (pitch-of-note pitch-note)))
 738         'Staff))
 739
 740 tweak = #(define-music-function (parser location sym val arg)
 741            (symbol? scheme? ly:music?)
 742
 743            (_i "Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
 744
 745            (set!
 746             (ly:music-property arg 'tweaks)
 747             (acons sym val
 748                    (ly:music-property arg 'tweaks)))
 749            arg)
 750
 751
 752
 753 unfoldRepeats =
 754 #(define-music-function (parser location music) (ly:music?)
 755                   (unfold-repeats music))
 756
 757
 758
 759 withMusicProperty =
 760 #(define-music-function (parser location sym val music) (symbol? scheme? ly:music?)
 761    (_i "Set @var{sym} to @var{val} in @var{music}.")
 762
 763    (set! (ly:music-property music sym) val)
 764    music)