Model jazz trained on jazz standard midi data.

Training data

All the training data comes from my corpus of jazz midi files that I've collected from the web. I picked some from the start of the alphabet, taking a few midis for each song.

The model's trained on 12 midi files, each truncated to 50 half-bars.

• A Fine Romance x3
• Afternoon in Paris x2
• Agua de Beber x2
• Ain't Misbehavin' x2
• Ain't That a Kick in the Head x1
• Airegin x1
• Alfie x1

Model Parameters

Raphael & Stoddard trained model, standard: jazz
as on Thu 01 Sep 2011

Emission distribution
 Beat category: 0 (1st beat)
   D = 0: 0.31311 (chord root)
   D = 1: 0.19380 (chord 3rd)
   D = 2: 0.20926 (chord 5th)
   D = 3: 0.25480 (other scale note)
   D = 4: 0.02903 (non-scale note)
 Beat category: 1 (3rd beat)
   D = 0: 0.28452 (chord root)
   D = 1: 0.16902 (chord 3rd)
   D = 2: 0.32592 (chord 5th)
   D = 3: 0.17221 (other scale note)
   D = 4: 0.04832 (non-scale note)
 Beat category: 2 (2nd or 4th beat)
   D = 0: 0.20450 (chord root)
   D = 1: 0.21512 (chord 3rd)
   D = 2: 0.19698 (chord 5th)
   D = 3: 0.31851 (other scale note)
   D = 4: 0.06489 (non-scale note)
 Beat category: 3 (off beat)
   D = 0: 0.17350 (chord root)
   D = 1: 0.18209 (chord 3rd)
   D = 2: 0.16609 (chord 5th)
   D = 3: 0.38402 (other scale note)
   D = 4: 0.09430 (non-scale note)


Transition distributions
Key transition distribution
 Previous mode: major
   key = I (0),     mode = major: 0.79638
   key = III (4),   mode = minor: 0.05193
   key = bVII (10), mode = major: 0.03815
   key = VI (9),    mode = minor: 0.03044
   key = IV (5),    mode = major: 0.01865
   key = II (2),    mode = minor: 0.01714
   key = III (4),   mode = major: 0.01509
   key = VII (11),  mode = minor: 0.00973
   key = V (7),     mode = major: 0.00814
   key = II (2),    mode = major: 0.00567
   key = VII (11),  mode = major: 0.00530
   key = V (7),     mode = minor: 0.00166
   key = bVI (8),   mode = major: 0.00093
   key = bII (1),   mode = major: 0.00077
   key = I (0),     mode = minor: 0.00000
   key = bV (6),    mode = minor: 0.00000
   key = bIII (3),  mode = major: 0.00000
   key = IV (5),    mode = minor: 0.00000
   key = VI (9),    mode = major: 0.00000
   key = bVI (8),   mode = minor: 0.00000
   key = bV (6),    mode = major: 0.00000
   key = bVII (10), mode = minor: 0.00000
   key = bII (1),   mode = minor: 0.00000
   key = bIII (3),  mode = minor: 0.00000
 Previous mode: minor
   key = I (0),     mode = minor: 0.43470
   key = bVII (10), mode = major: 0.18771
   key = bVI (8),   mode = major: 0.16887
   key = IV (5),    mode = minor: 0.07069
   key = bIII (3),  mode = major: 0.05819
   key = bII (1),   mode = major: 0.02680
   key = V (7),     mode = minor: 0.01699
   key = bVII (10), mode = minor: 0.01290
   key = I (0),     mode = major: 0.00950
   key = V (7),     mode = major: 0.00623
   key = bV (6),    mode = major: 0.00401
   key = VI (9),    mode = major: 0.00241
   key = VI (9),    mode = minor: 0.00073
   key = IV (5),    mode = major: 0.00026
   key = II (2),    mode = minor: 0.00000
   key = VII (11),  mode = major: 0.00000
   key = III (4),   mode = minor: 0.00000
   key = II (2),    mode = major: 0.00000
   key = bIII (3),  mode = minor: 0.00000
   key = bVI (8),   mode = minor: 0.00000
   key = bV (6),    mode = minor: 0.00000
   key = bII (1),   mode = minor: 0.00000
   key = III (4),   mode = major: 0.00000
   key = VII (11),  mode = minor: 0.00000

Chord transition distribution
 Previous chord: I
   I:   0.67497
   II:  0.15471
   IV:  0.09925
   VII: 0.06820
   III: 0.00271
   VI:  0.00016
   V:   0.00000
 Previous chord: II
   V:   0.60142
   II:  0.30060
   III: 0.08519
   IV:  0.01277
   VII: 0.00001
   VI:  0.00001
   I:   0.00000
 Previous chord: III
   I:   0.42999
   III: 0.38528
   IV:  0.11913
   V:   0.05809
   VI:  0.00748
   VII: 0.00004
   II:  0.00000
 Previous chord: IV
   VII: 0.45148
   IV:  0.37075
   III: 0.11032
   VI:  0.05172
   V:   0.01571
   II:  0.00001
   I:   0.00000
 Previous chord: V
   I:   0.67940
   V:   0.31406
   IV:  0.00412
   III: 0.00235
   II:  0.00004
   VI:  0.00002
   VII: 0.00001
 Previous chord: VI
   VI:  0.84814
   I:   0.07380
   IV:  0.06911
   V:   0.00896
   III: 0.00000
   VII: 0.00000
   II:  0.00000
 Previous chord: VII
   VII: 0.42720
   VI:  0.32106
   III: 0.17603
   V:   0.04105
   IV:  0.02465
   I:   0.01000
   II:  0.00002

Key change chord dist
 II:  0.45648
 V:   0.15977
 VII: 0.15874
 IV:  0.11401
 III: 0.08431
 VI:  0.02565
 I:   0.00104