# chordtable.py """ This module is an integeral part of the program MMA - Musical Midi Accompaniment. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Bob van der Poel Table of chords. All are based on a C scale. Generating chords is easy in MIDI since we just need to add/subtract constants, based on yet another table. CAUTION, if you add to this table make sure there are at least 3 notes in each chord! Don't make any chord longer than 8 notes (The pattern define sets volumes for only 8). There is a corresponding scale set for each chord. These are used by bass and scale patterns. Each chord needs an English doc string. This is extracted by the -Dn option to print a table of chordnames for inclusion in the reference manual. """ C = 0 Cs = Db = 1 D = 2 Ds = Eb = 3 E = Fb = 4 Es = F = 5 Fs = Gb = 6 G = 7 Gs = Ab = 8 A = Bbb= 9 As = Bb = 10 B = Cb = 11 chordlist = { 'M': ((C, E, G ), (C, D, E, F, G, A, B), "Major triad. This is the default and is used in " "the absense of any other chord type specification."), '(b5)': ((C, E, Gb ), (C, D, E, F, Gb, A, B), "Major triad with flat 5th."), 'add9': ((C, E, G, D+12), (C, D, E, F, G, A, D+12), "Major chord plus 9th (no 7th.)"), 'm': ((C, Eb, G ), (C, D, Eb, F, G, Ab, Bb), "Minor triad."), 'mb5': ((C, Eb, Gb ), (C, D, Eb, F, Gb, Ab, Bb), "Minor triad with flat 5th (aka dim)."), 'm#5': ((C, Eb, Gs ), (C, D, Eb, F, Gs, Ab, Bb), "Minor triad with augmented 5th."), 'm6': ((C, Eb, G, A ), (C, D, Eb, F, G, A, Bb), "Minor 6th (flat 3rd plus a 6th)."), 'm6(add9)': ((C, Eb, G, D+12, A+12), (C, D, Eb, F, G, A, Bb), "Minor 6th with added 9th. This is sometimes notated as a slash chord " "in the form ``m6/9''." ), 'm7': ((C, Eb, G, Bb ), (C, D, Eb, F, G, Ab, Bb), "Minor 7th (flat 3rd plus dominant 7th)."), 'mM7': ((C, Eb, G, B ), (C, D, Eb, F, G, Ab, B), "Minor Triad plus Major 7th. You will also see this printed " "as ``m(maj7)'', ``m+7'', ``min(maj7)'' and ``min$\sharp$7'' " "(which \mma\ accepts); as well as the \mma\ \emph{invalid} " "forms: ``-($\Delta$7)'', and ``min$\\natural$7''."), 'm+7b9': ((C, Eb, Gs, Bb, Db+12), (C, Db, Eb, F, Gs, Ab, Bb), "Augmented minor 7 plus flat 9th."), 'm+7#9': ((C, Eb, Gs, Bb, Ds+12), (C, Ds, Eb, F, Gs, Ab, Bb), "Augmented minor 7 plus sharp 9th."), 'mM7(add9)': ((C, Eb, G, B, D+12), (C, D, Eb, F, G, Ab, B), "Minor Triad plus Major 7th and 9th."), 'm7b5': ((C, Eb, Gb, Bb ), (C, D, Eb, F, Gb, Ab, Bb), "Minor 7th, flat 5 (aka 1/2 diminished). "), 'm7b9': ((C, Eb, G, Bb, Db+12 ), (C, Db, Eb, F, G, Ab, Bb), "Minor 7th with added flat 9th."), 'm7#9': ((C, Eb, G, Bb, Ds+12 ), (C, Ds, Eb, F, G, Ab, Bb), "Minor 7th with added sharp 9th."), '7': ((C, E, G, Bb ), (C, D, E, F, G, A, Bb), "7th."), '7b5': ((C, E, Gb, Bb ), (C, D, E, F, Gb, A, Bb), "7th, flat 5."), 'dim7': ((C, Eb, Gb, Bbb ), (C, D, Eb, F, Gb, Ab, Bbb ), # missing 8th note "Diminished seventh."), 'dim7(addM7)': ((C, Eb, Gb, A, B), (C, D, Eb, F, Gb, A, B), "Diminished tirad with added Major 7th."), 'aug': ((C, E, Gs ), (C, D, E, F, Gs, A, B ), "Augmented triad."), '6': ((C, E, G, A ), (C, D, E, F, G, A, B), "Major tiad with added 6th."), '6(add9)': ((C, E, G, D+12, A+12), (C, D, E, F, G, A, B), "6th with added 9th. This is sometimes notated as a slash chord " "in the form ``6/9''."), 'M7': ((C, E, G, B), (C, D, E, F, G, A, B), "Major 7th."), 'M7#5': ((C, E, Gs, B), (C, D, E, F, Gs, A, B), "Major 7th with sharp 5th."), 'M7b5': ((C, E, Gb, B ), (C, D, E, F, Gb, A, B ), "Major 7th with a flat 5th."), '9': ((C, E, G, Bb, D+12 ), (C, D, E, F, G, A, Bb), "7th plus 9th."), '9b5': ((C, E, Gb, Bb, D+12 ), (C, D, E, F, Gb, A, Bb), "7th plus 9th with flat 5th."), 'm9': ((C, Eb, G, Bb, D+12 ), (C, D, Eb, F, G, Ab, Bb), "Minor triad plus 7th and 9th."), 'm7b5b9': ((C, Eb, Gb, Bb, Db+12), (C, Db, Eb, F, Gb, Ab, Bb), "Minor 7th with flat 5th and flat 9th."), 'm9b5': ((C, Eb, Gb, Bb, D+12 ), (C, D, Eb, F, Gb, Ab, Bb), "Minor triad, flat 5, plus 7th and 9th."), 'm(sus9)':((C, Eb, G, D+12 ), (C, D, Eb, F, G, Ab, D+12), "Minor triad plus 9th (no 7th)."), 'M9': ((C, E, G, B, D+12 ), (C, D, E, F, G, A, B), "Major 7th plus 9th."), 'M9#11': ((C, E, G, B, D+12, Fs+12), (C, D, E, Fs, G, A, B), "Major 9th plus sharp 11th."), '7b9': ((C, E, G, Bb, Db+12 ), (C, Db, E, F, G, A, Bb), "7th with flat 9th."), '7#9': ((C, E, G, Bb, Ds+12 ), (C, Ds, E, F, G, A, Bb), "7th with sharp 9th."), '7#9b13': ((C, E, G, Bb, Ds+12, Ab+12 ), (C, Ds, E, F, G, Ab, Bb), "7th with sharp 9th and flat 13th."), '7b5b9':((C, E, Gb, Bb, Db+12 ), (C, Db, E, F, Gb, A, Bb), "7th with flat 5th and flat 9th."), '7b5#9':((C, E, Gb, Bb, Ds+12 ), (C, Ds, E, F, Gb, A, Bb), "7th with flat 5th and sharp 9th."), '7#5#9':((C, E, Gs, Bb, Ds+12 ), (C, Ds, E, F, Gs, A, Bb), "7th with sharp 5th and sharp 9th."), 'aug7': ((C, E, Gs, Bb ), (C, D, E, F, Gs, A, Bb), "An augmented chord (raised 5th) with a dominant 7th."), 'aug7b9':((C, E, Gs, Bb, Db+12 ), (C, Db, E, F, Gs, A, Bb), "An augmented chord (raised 5th) with a dominant 7th and flat 9th."), 'aug7#9':((C, E, Gs, Bb, Ds+12 ), (C, Ds, E, F, Gs, A, Bb), "An augmented chord (raised 5th) with a dominant 7th and sharp 9th."), 'aug9M7':((C, E, Gs, B, D+12 ), (C, D, E, F, Gs, A, B), "An augmented chord (raised 5th) with a major 7th and 9th."), '+7b9#11': ((C, E, Gs, Bb, Db+12, Fs+12), (C, Db, E, Fs, G, A, Bb), "Augmented 7th with flat 9th and sharp 11th."), 'm+7b9#11': ((C, Eb, Gs, Bb, Db+12, Fs+12), (C, Db, Eb, Fs, Gs, A, Bb), "Augmented minor 7th with flat 9th and sharp 11th."), '11': ((C, C, G, Bb, D+12, F+12 ), (C, D, E, F, G, A, Bb), "9th chord plus 11th (3rd not voiced)."), 'm11': ((C, Eb, G, Bb, D+12, F+12 ), (C, D, Eb, F, G, Ab, Bb), "9th with minor 3rd, plus 11th."), 'm7(add11)': ((C, Eb, G, Bb, F+12 ), (C, D, Eb, F, G, Ab, Bb), "Minor 7th plus 11th."), 'm9#11': ((C, Eb, G, Bb, D+12, Fs+12), (C, D, Eb, Fs, G, A, Bb), "Minor 7th plus 9th and sharp 11th."), 'm7b9#11': ((C, Eb, G, Bb, Db+12, Fs+12), (C, Db, Eb, Fs, G, A, Bb), "Minor 7th plus flat 9th and sharp 11th."), 'm7(add13)': ((C, Eb, G, Bb, A+12 ), (C, D, Eb, F, G, A, Bb), "Minor 7th plus 13th."), '11b9': ((C, E, G, Bb, Db+12, F+12 ), (C, Db, E, F, G, A, Bb), "7th chord plus flat 9th and 11th."), '9#5': ((C, E, Gs, Bb, D+12 ), (C, D, E, F, Gs, A, Bb), "7th plus 9th with sharp 5th (same as aug9)."), '9#11': ((C, E, G, Bb, D+12, Fs+12 ), (C, D, E, Fs, G, A, Bb), "7th plus 9th and sharp 11th."), '7#9#11':((C, E, G, Bb, Ds+12, Fs+12 ), (C, Ds, E, Fs, G, A, Bb), "7th plus sharp 9th and sharp 11th."), '7b9#11': ((C, E, G, Bb, Db+12, Fs+12 ), (C, Db, E, Fs, G, A, Bb), "7th plus flat 9th and sharp 11th."), '7#11':((C, E, G, Bb, Fs+12 ), (C, D, E, Fs, G, A, Bb), "7th plus sharp 11th (9th omitted)."), 'M7#11':((C, E, G, B, Fs+12 ), (C, D, E, Fs, G, A, B), "Major 7th plus sharp 11th (9th omitted)."), 'm11b5': ((C, Eb, Gb, Bb, D+12, F+12), (C, D, Eb, F, Gb, A, Bb), "Minor 7th with flat 5th plus 11th."), # Sus chords. Not sure what to do with the associated scales. For # now just duplicating the 2nd or 3rd in the scale seems to make sense. 'sus4': ((C, F, G ), (C, D, F, F, G, A, B), "Suspended 4th, major triad with the 3rd raised half tone."), '7sus': ((C, F, G, Bb ), (C, D, F, F, G, A, Bb), "7th with suspended 4th, dominant 7th with 3rd " "raised half tone."), '7susb9': ((C, F, G, Bb, Db+12), (C, Db, F, F, G, A, Bb), "7th with suspended 4th and flat 9th."), 'sus2': ((C, D, G ), (C, D, D, F, G, A, B), "Suspended 2nd, major triad with the major 2nd above the " "root substituted for 3rd."), '7sus2':((C, D, G, Bb ), (C, D, D, F, G, A, Bb), "A sus2 with dominant 7th added."), 'sus9': ((C, F, G, Bb, D+12), (C, D, F, F, G, A, Bb), "7sus plus 9th."), '13sus': ((C, F, G, Bb, D+12, A+12), (C, D, F, F, G, A, Bb), "7sus, plus 9th and 13th"), '13susb9': ((C, F, G, Bb, Db+12, A+12), (C, Db, F, F, G, A, Bb), "7sus, plus flat 9th and 13th"), # these chords should probably NOT have the 5th included, # but since a number of voicings depend on the 5th being # the third note of the chord, they're here. '13': ((C, E, G, Bb, A+12), (C, D, E, F, G, A, Bb), "7th (including 5th) plus 13th (the 9th and 11th are not voiced)."), '13b5': ((C, E, Gb, Bb, A+12), (C, D, E, F, Gb, A, Bb), "7th with flat 5th, plus 13th (the 9th and 11th are not voiced)."), '13#9': ((C, E, G, Bb, Ds+12, A+12), (C, Ds, E, F, G, A, Bb), "7th (including 5th) plus 13th and sharp 9th (11th not voiced)."), '13b9': ((C, E, G, Bb, Db+12, A+12), (C, Db, E, F, G, A, Bb), "7th (including 5th) plus 13th and flat 9th (11th not voiced)."), 'M13': ((C, E, G, B, A+12), (C, D, E, F, G, A, B), "Major 7th (including 5th) plus 13th (9th and 11th not voiced)."), 'm13': ((C, Eb, G, Bb, A+12), (C, D, Eb, F, G, A, Bb), "Minor 7th (including 5th) plus 13th (9th and 11th not voiced)."), '13#11': ((C, E, G, Bb, Fs+12, A+12), (C, D, E, Fs, G, A, Bb), "7th plus sharp 11th and 13th (9th not voiced)."), 'M13#11': ((C, E, G, B, Fs+12, A+12), (C, D, E, Fs, G, A, B), "Major 7th plus sharp 11th and 13th (9th not voiced)."), # Because some patterns assume that the 3rd note in a chord is a 5th, # or a varient, we duplicate the root into the position of the 3rd ... and # to make the sound even we duplicate the 5th into the 4th position as well. '5': ((C, C, G, G ), (C, D, E, F, G, A, B), "Altered Fifth or Power Chord; root and 5th only."), 'omit3add9': ((C, C, G, D+12), (C, D, E, F, G, A, Bb), "Triad: root, 5th and 9th."), '7omit3': ((C, C, G, Bb), (C, D, E, F, G, A, Bb), "7th with unvoiced 3rd."), 'm7omit5': ((C, Eb, Bb), (C, D, Eb, F, G, A, Bb), "Minor 7th with unvoiced 5th."), } """ Extend our table with common synomyns. These are real copies, not pointers. This is done so that a user redefine only affects the original. """ aliases = ( ('aug9', '9#5', ''), ('+9', '9#5', ''), ('+9M7', 'aug9M7', ''), ('+M7', 'M7#5', ''), ('m(add9)', 'm(sus9)', ''), ('69', '6(add9)', ''), ('m69', 'm6(add9)', ''), ('m(b5)', 'mb5', ''), ('m7(b9)', 'm7b9', ''), ('m7(#9)', 'm7#9', ''), ('9+5', '9#5', ''), ('m+5', 'm#5', ''), ('M6', '6', ''), ('m7-5', 'm7b5', ''), ('m7(omit5)','m7omit5', ''), ('+', 'aug', ''), ('+7', 'aug7', ''), ('7(omit3)', '7omit3', ''), ('#5', 'aug', ''), ('7#5b9', 'aug7b9', ''), ('7-9', '7b9', ''), ('7+9', '7#9', ''), ('maj7', 'M7', ''), ('M7-5', 'M7b5', ''), ('M7+5', 'M7#5', ''), ('M7(add13)','13b9', ''), ('7alt', '7b5b9', ''), ('7sus4', '7sus', ''), ('7+', 'aug7', ''), ('7#5', 'aug7', ''), ('7+5', 'aug7', ''), ('7-5', '7b5', ''), ('sus', 'sus4', ''), ('maj9', 'M9', ''), ('maj13', 'M13', ''), ('m(maj7)', 'mM7', ''), ('m+7', 'mM7', ''), ('min(maj7)','mM7', ''), ('min#7', 'mM7', ''), ('m#7', 'mM7', ''), ('dim', 'dim7', 'A dim7, not a triad!'), ('9sus', 'sus9', ''), ('9-5', '9b5', ''), ('dim3', 'mb5', 'Diminished triad (non-standard notation).'), ('omit3(add9)','omit3add9', ''), ('9sus4', 'sus9', '') ) for a,b,d in aliases: n=chordlist[b][0] s=chordlist[b][1] if not d: d=chordlist[b][2] chordlist[a] = (n, s, d)