2 ;;; chord-name.scm -- Compile chord name
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
12 ;; urg, these two only to guess if a '/' is needed to separate
13 ;; user-chord-name and additions/subtractions
19 ;; (octave notename accidental)
23 ;; text: scm markup text -- see font.scm and input/test/markup.ly
28 ;; * clean split of base/banter/american stuff
29 ;; * text definition is rather ad-hoc
30 ;; * do without format module
31 ;; * finish and check american names
32 ;; * make notename (tonic) configurable from lilypond
33 ;; * fix append/cons stuff in inner-name-banter
37 (define chord::names-alist-banter '())
38 (set! chord::names-alist-banter
44 (((0 . 0) (2 . 0)) . #f)
46 (((0 . 0) (2 . -1)) . ("m"))
48 (((0 . 0) (1 . 0) (4 . 0)) . (super "2"))
50 (((0 . 0) (3 . 0) (4 . 0)) . (super "4"))
52 (((0 . 0) (2 . -1) (4 . -1)) . ("dim"))
55 (((0 . 0) (2 . -1) (4 . -1) (6 . -2)) . (super "o"))
57 (((0 . 0) (2 . -1) (4 . -1) (6 . -2) (1 . -1)) . ("dim" (super "9")))
58 (((0 . 0) (2 . -1) (4 . -1) (6 . -2) (1 . -1) (3 . -1)) . ("dim" (super "11")))
60 chord::names-alist-banter))
63 ;; NOTE: Duplicates of chord names defined elsewhere occur in this list
64 ;; in order to prevent spurious superscripting of various chord names,
65 ;; such as maj7, maj9, etc.
67 ;; See input/test/american-chords.ly
69 ;; James Hammons, <jlhamm@pacificnet.net>
72 ;; DONT use non-ascii characters, even if ``it works'' in Windows
74 (define chord::names-alist-american '())
76 (set! chord::names-alist-american
80 (((0 . 0) (2 . 0)) . #f)
82 (((0 . 0) (4 . 0)) . ("5"))
84 (((0 . 0) (2 . -1)) . ("m"))
85 (((0 . 0) (3 . 0) (4 . 0)) . ("sus"))
86 (((0 . 0) (2 . -1) (4 . -1)) . ("dim"))
87 ;Alternate: (((0 . 0) (2 . -1) (4 . -1)) . ((super "o")))
88 (((0 . 0) (2 . 0) (4 . 1)) . ("aug"))
89 ;Alternate: (((0 . 0) (2 . 0) (4 . 1)) . ("+"))
90 (((0 . 0) (1 . 0) (4 . 0)) . ("2"))
91 ;; Common seventh chords
92 (((0 . 0) (2 . -1) (4 . -1) (6 . -2)) . (rows (super "o") "7"))
93 (((0 . 0) (2 . 0) (4 . 0) (6 . 0)) . ("maj7"))
94 (((0 . 0) (2 . -1) (4 . 0) (6 . -1)) . ("m7"))
95 (((0 . 0) (2 . 0) (4 . 0) (6 . -1)) . ("7"))
96 (((0 . 0) (2 . -1) (4 . 0) (6 . 0)) . ("m(maj7)"))
97 ;jazz: the delta, see jazz-chords.ly
98 ;;(((0 . 0) (2 . -1) (4 . -1) (6 . -2)) . (super ((font-family . math) "N"))
99 ;; ugh, kludge slashed o
100 (((0 . 0) (2 . -1) (4 . -1) (6 . -1)) . (rows ((raise . 1) "o") ((kern . -0.85) ((raise . 0.57) ((font-relative-size . -3) "/"))) "7")) ; slashed o
101 (((0 . 0) (2 . 0) (4 . 1) (6 . -1)) . ("aug7"))
102 (((0 . 0) (2 . 0) (4 . -1) (6 . 0)) . (rows "maj7" ((font-relative-size . -2) ((raise . 0.2) (music (named "accidentals--1")))) "5"))
103 (((0 . 0) (2 . 0) (4 . -1) (6 . -1)) . (rows "7" ((font-relative-size . -2) ((raise . 0.2) (music (named "accidentals--1")))) "5"))
104 (((0 . 0) (3 . 0) (4 . 0) (6 . -1)) . ("7sus4"))
105 ;; Common ninth chords
106 (((0 . 0) (2 . 0) (4 . 0) (5 . 0) (1 . 0)) . ("6/9")) ;; we don't want the '/no7'
107 (((0 . 0) (2 . 0) (4 . 0) (5 . 0)) . ("6"))
108 (((0 . 0) (2 . -1) (4 . 0) (5 . 0)) . ("m6"))
109 (((0 . 0) (2 . 0) (4 . 0) (1 . 0)) . ("add9"))
110 (((0 . 0) (2 . 0) (4 . 0) (6 . 0) (1 . 0)) . ("maj9"))
111 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . 0)) . ("9"))
112 (((0 . 0) (2 . -1) (4 . 0) (6 . -1) (1 . 0)) . ("m9"))
115 chord::names-alist-american))
117 ;; Jazz chords, by Atte Andr'e Jensen <atte@post.com>
118 ;; NBs: This uses the american list as a base.
119 ;; Some defs take up more than one line,
120 ;; be carefull when messing with ;'s!!
125 ;; This is getting out-of hand? Only exceptional chord names that
126 ;; cannot be generated should be here.
127 ;; Maybe we should have inner-jazz-name and inner-american-name functions;
131 ;; DONT use non-ascii characters, even if ``it works'' in Windows
133 (define chord::names-alist-jazz '())
134 (set! chord::names-alist-jazz
138 ; major sixth chord = 6
139 (((0 . 0) (2 . 0) (4 . 0) (5 . 0)) . (((raise . 0.5) "6")))
140 ; major seventh chord = triangle
141 ;; shouldn't this be a filled black triange, like this: ? --jcn
142 ;; (((0 . 0) (2 . 0) (4 . 0) (6 . 0)) . (((raise . 0.5)((font-family . math) "N"))))
143 (((0 . 0) (2 . 0) (4 . 0) (6 . 0)) . (((raise . 0.5)((font-family . math) "M"))))
144 ; major chord add nine = add9
145 (((0 . 0) (2 . 0) (4 . 0) (1 . 0)) . (((raise . 0.5) "add9")))
146 ; major sixth chord with nine = 6/9
147 (((0 . 0) (2 . 0) (4 . 0) (5 . 0) (1 . 0)) . (((raise . 0.5) "6/9")))
150 ; minor sixth chord = m6
151 (((0 . 0) (2 . -1) (4 . 0) (5 . 0)) . (rows("m")((raise . 0.5) "6")))
152 ;; minor major seventh chord = m triangle
153 ;; shouldn't this be a filled black triange, like this: ? --jcn
154 ;;(((0 . 0) (2 . -1) (4 . 0) (6 . 0)) . (rows ("m") ((raise . 0.5)((font-family . math) "N"))))
155 (((0 . 0) (2 . -1) (4 . 0) (6 . 0)) . (rows ("m") ((raise . 0.5)((font-family . math) "M"))))
156 ; minor seventh chord = m7
157 (((0 . 0) (2 . -1) (4 . 0) (6 . -1)) . (rows("m")((raise . 0.5) "7")))
158 ; minor sixth nine chord = m6/9
159 (((0 . 0) (2 . -1) (4 . 0) (5 . 0) (1 . 0)) . (rows("m")((raise . 0.5) "6/9")))
160 ; minor with added nine chord = madd9
161 (((0 . 0) (2 . -1) (4 . 0) (1 . 0)) . (rows("m")((raise . 0.5) "add9")))
162 ; minor ninth chord = m9
163 (((0 . 0) (2 . -1) (4 . 0) (6 . -1) (1 . 0)) . (rows("m")((raise . 0.5) "9")))
166 ; dominant seventh = 7
167 (((0 . 0) (2 . 0) (4 . 0) (6 . -1)) . (((raise . 0.5) "7")))
168 ; augmented dominant = +7
169 ;(((0 . 0) (2 . 0) (4 . +1) (6 . -1)) . (((raise . 0.5) "+7"))) ; +7 with both raised
170 (((0 . 0) (2 . 0) (4 . +1) (6 . -1)) . (rows("+")((raise . 0.5) "7"))) ; +7 with 7 raised
171 ;(((0 . 0) (2 . 0) (4 . +1) (6 . -1)) . (rows((raise . 0.5) "7(")
172 ; ((raise . 0.3)(music (named ("accidentals-1"))))
173 ; ((raise . 0.5) "5)"))); 7(#5)
174 ; dominant flat 5 = 7(b5)
175 (((0 . 0) (2 . 0) (4 . -1) (6 . -1)) . (rows((raise . 0.5) "7(")
176 ((raise . 0.3)(music (named ("accidentals--1"))))
177 ((raise . 0.5) "5)")))
179 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . 0)) . (((raise . 0.8)"7(9)")))
180 ; dominant flat 9 = 7(b9)
181 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . -1)) . (
183 ((raise . 0.3)(music (named ("accidentals--1"))))
184 ((raise . 0.8)"9)")))
185 ; dominant sharp 9 = 7(#9)
186 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . +1)) . (
188 ((raise . 0.3)(music (named ("accidentals-1"))))
189 ((raise . 0.8)"9)")))
190 ; dominant 13 = 7(13)
191 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (5 . 0)) . (((raise . 0.8)"7(13)")))
192 ; dominant flat 13 = 7(b13)
193 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (5 . -1)) . (
195 ((raise . 0.3)(music (named ("accidentals--1"))))
196 ((raise . 0.8)"13)")))
197 ; dominant 9, 13 = 7(9,13)
198 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . 0) (5 . 0)) . (((raise . 0.8)"7(9, 13)")))
199 ; dominant flat 9, 13 = 7(b9,13)
200 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . -1) (5 . 0)) . (
202 ((raise . 0.3)(music (named ("accidentals--1"))))
203 ((raise . 0.8)"9, 13)")))
204 ; dominant sharp 9, 13 = 7(#9,13)
205 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . +1) (5 . 0)) . (
207 ((raise . 0.3)(music (named ("accidentals-1"))))
208 ((raise . 0.8)"9, 13)")))
209 ; dominant 9, flat 13 = 7(9,b13)
210 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . 0) (5 . -1)) . (
211 ((raise . 0.8)"7(9, ")
212 ((raise . 0.3)(music (named ("accidentals--1"))))
213 ((raise . 0.8)"13)")))
214 ; dominant flat 9, flat 13 = 7(b9,b13)
215 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . -1) (5 . -1)) . (
217 ((raise . 0.3)(music (named ("accidentals--1"))))
219 ((raise . 0.3)(music (named ("accidentals--1"))))
220 ((raise . 0.8)"13)")))
221 ; dominant sharp 9, flat 13 = 7(#9,b13)
222 (((0 . 0) (2 . 0) (4 . 0) (6 . -1) (1 . +1) (5 . -1)) . (
224 ((raise . 0.3)(music (named ("accidentals-1"))))
226 ((raise . 0.3)(music (named ("accidentals--1"))))
227 ((raise . 0.8)"13)")))
229 ;; diminished chord(s)
230 ; diminished seventh chord = o
233 ;; DONT use non-ascii characters, even if ``it works'' in Windows
235 ;;(((0 . 0) (2 . -1) (4 . -1) (6 . -2)) . (((raise . 0.8)"o"))); works, but "o" is a little big
236 (((0 . 0) (2 . -1) (4 . -1) (6 . -2)) . ((raise . 0.8) (size . -2) ("o")))
238 ;; half diminshed chords
239 ; half diminished seventh chord = slashed o
240 (((0 . 0) (2 . -1) (4 . -1) (6 . -1)) . (((raise . 0.8)"/o")))
241 ; half diminished seventh chord with major 9 = slashed o cancelation 9
242 (((0 . 0) (2 . -1) (4 . -1) (6 . -1) (1 . 0)) . (
244 ((raise . 0.3)(music (named ("accidentals-0"))))
245 ((raise . 0.8)"9)")));
247 ;; Missing jazz chord definitions go here (note new syntax: see american for hints)
250 chord::names-alist-american))
255 (define (pitch->note-name pitch)
256 (cons (cadr pitch) (caddr pitch)))
258 (define (pitch->text pitch)
260 (make-string 1 (integer->char (+ (modulo (+ (cadr pitch) 2) 7) 65)))
261 (if (= (caddr pitch) 0)
268 (append '((font-relative-size . -2))
269 (list (append '((raise . 0.6))
271 (string-append "accidentals-"
272 (number->string (caddr pitch)))))))))))))))
274 (define (step->text pitch)
276 (number->string (+ (cadr pitch) (if (= (car pitch) 0) 1 8)))
284 (define (pitch->text-banter pitch)
287 (define (step->text-banter pitch)
288 (if (= (cadr pitch) 6)
297 (define pitch::semitone-vec (list->vector '(0 2 4 5 7 9 11)))
299 (define (pitch::semitone pitch)
300 (+ (* (car pitch) 12)
301 (vector-ref pitch::semitone-vec (modulo (cadr pitch) 7))
304 (define (pitch::transpose pitch delta)
305 (let ((simple-octave (+ (car pitch) (car delta)))
306 (simple-notename (+ (cadr pitch) (cadr delta))))
307 (let ((octave (+ simple-octave (quotient simple-notename 7)))
308 (notename (modulo simple-notename 7)))
309 (let ((accidental (- (+ (pitch::semitone pitch) (pitch::semitone delta))
310 (pitch::semitone `(,octave ,notename 0)))))
311 `(,octave ,notename ,accidental)))))
313 (define (pitch::diff pitch tonic)
314 (let ((simple-octave (- (car pitch) (car tonic)))
315 (simple-notename (- (cadr pitch) (cadr tonic))))
316 (let ((octave (+ simple-octave (quotient simple-notename 7)
317 (if (< simple-notename 0) -1 0)))
318 (notename (modulo simple-notename 7)))
319 (let ((accidental (- (pitch::semitone pitch)
320 (pitch::semitone tonic)
321 (pitch::semitone `(,octave ,notename 0)))))
322 `(,octave ,notename ,accidental)))))
324 (define (pitch::note-pitch pitch)
325 (+ (* (car pitch) 7) (cadr pitch)))
327 (define (chord::step tonic pitch)
328 (- (pitch::note-pitch pitch) (pitch::note-pitch tonic)))
330 ;; text: list of word
331 ;; word: string + optional list of property
332 ;; property: align, kern, font (?), size
334 (define chord::minor-major-vec (list->vector '(0 -1 -1 0 -1 -1 0)))
336 ;; compute the relative-to-tonic pitch that goes with 'step'
337 (define (chord::step-pitch tonic step)
338 ;; urg, we only do this for thirds
339 (if (= (modulo step 2) 0)
341 (let loop ((i 1) (pitch tonic))
345 pitch `(0 2 ,(vector-ref chord::minor-major-vec
346 ;; -1 (step=1 -> vector=0) + 7 = 6
347 (modulo (+ i 6) 7)))))))))
349 ;; find the pitches that are not part of `normal' chord
350 (define (chord::additions chord-pitches)
351 (let ((tonic (car chord-pitches)))
352 ;; walk the chord steps: 1, 3, 5
353 (let loop ((step 1) (pitches chord-pitches) (additions '()))
355 (let* ((pitch (car pitches))
356 (p-step (+ (- (pitch::note-pitch pitch)
357 (pitch::note-pitch tonic))
359 ;; pitch is an addition if
361 ;; it comes before this step or
363 ;; its step is even or
364 (= (modulo p-step 2) 0)
365 ;; has same step, but different accidental or
367 (not (equal? pitch (chord::step-pitch tonic step))))
368 ;; is the last of the chord and not one of base thirds
370 (= (length pitches) 1)))
371 (loop step (cdr pitches) (cons pitch additions))
373 (loop step (cdr pitches) additions)
374 (loop (+ step 2) pitches additions))))
375 (reverse additions)))))
377 ;; find the pitches that are missing from `normal' chord
378 (define (chord::subtractions chord-pitches)
379 (let ((tonic (car chord-pitches)))
380 (let loop ((step 1) (pitches chord-pitches) (subtractions '()))
382 (let* ((pitch (car pitches))
383 (p-step (+ (- (pitch::note-pitch pitch)
384 (pitch::note-pitch tonic))
386 ;; pitch is an subtraction if
387 ;; a step is missing or
389 (loop (+ step 2) pitches
390 (cons (chord::step-pitch tonic step) subtractions))
391 ;; there are no pitches left, but base thirds are not yet done and
393 (= (length pitches) 1))
394 ;; present pitch is not missing step
396 (loop (+ step 2) pitches subtractions)
397 (loop (+ step 2) pitches
398 (cons (chord::step-pitch tonic step) subtractions)))
400 (loop (+ step 2) (cdr pitches) subtractions)
401 (loop step (cdr pitches) subtractions)))))
402 (reverse subtractions)))))
404 ;; combine tonic, user-specified chordname,
405 ;; additions, subtractions and base or inversion to chord name
407 (define (chord::inner-name-banter tonic user-name additions subtractions base-and-inversion)
410 (pitch->text-banter tonic)
411 (if user-name user-name '())
412 ;; why does list->string not work, format seems only hope...
413 (if (and (string-match "super" (format "~s" user-name))
414 (or (pair? additions)
415 (pair? subtractions)))
418 (let loop ((from additions) (to '()))
420 (let ((p (car from)))
424 (list 'super (step->text-banter p))
425 (if (or (pair? (cdr from))
426 (pair? subtractions))
430 (let loop ((from subtractions) (to '()))
432 (let ((p (car from)))
437 (list 'super (step->text-banter p))
438 (if (pair? (cdr from))
442 (if (and (pair? base-and-inversion)
443 (or (car base-and-inversion)
444 (cdr base-and-inversion)))
446 (if (car base-and-inversion)
448 (car base-and-inversion))
450 (cdr base-and-inversion)))
455 (define (chord::name-banter tonic user-name pitches base-and-inversion)
456 (let ((additions (chord::additions pitches))
457 (subtractions (chord::subtractions pitches)))
458 (chord::inner-name-banter tonic user-name additions subtractions base-and-inversion)))
460 ;; american chordnames use no "no",
461 ;; but otherwise very similar to banter for now
462 (define (chord::name-american tonic user-name pitches base-and-inversion)
463 (let ((additions (chord::additions pitches))
465 (chord::inner-name-banter tonic user-name additions subtractions base-and-inversion)))
467 ;; Jazz style--basically similar to american with minor changes
468 (define (chord::name-jazz tonic user-name pitches base-and-inversion)
469 (let ((additions (chord::additions pitches))
471 (chord::inner-name-banter tonic user-name additions subtractions base-and-inversion)))
473 (define (new-to-old-pitch p)
475 (list (pitch-octave p) (pitch-notename p) (pitch-alteration p))
483 ;; Check for each subset of chord, full chord first, if there's a
484 ;; user-override. Split the chord into user-overridden and to-be-done
485 ;; parts, complete the missing user-override matched part with normal
486 ;; chord to be name-calculated.
488 ;; CHORD: (pitches (base . inversion))
489 (define (default-chord-name-function style chord)
490 (let* ((pitches (map new-to-old-pitch (car chord)))
491 (modifiers (cdr chord))
492 (base-and-inversion (if (pair? modifiers)
493 (cons (new-to-old-pitch (car modifiers))
494 (new-to-old-pitch (cdr modifiers)))
496 (diff (pitch::diff '(0 0 0) (car pitches)))
498 (ly-eval (string->symbol (string-append "chord::name-" style))))
500 (ly-eval (string->symbol (string-append "chord::names-alist-" style)))))
501 (let loop ((note-names (reverse pitches))
504 (if (pair? note-names)
508 (pitch->note-name (pitch::transpose x diff)))
512 ;; urg? found: break loop
513 (loop '() chord (cdr entry))
514 (loop (cdr note-names) (cons (car note-names) chord) #f)))
515 (let* ((transposed (if pitches
516 (map (lambda (x) (pitch::transpose x diff)) chord)
518 (matched (if (= (length chord) 0)
520 (- (length pitches) (length chord))))
522 (append (do ((i matched (- i 1))
523 (base '() (cons `(0 ,(* (- i 1) 2) 0) base)))
527 (name-func (car pitches) user-name completed base-and-inversion))))))