Appendix 2
Statistics of the training set
The number of notes in the training set: 7982
The total percents of each pitch output unit in the training set:
| C | C# | D | D# | E | F | F# | G | G# | A | A# | B |
| 16.02% | 0.12% | 14.83% | 0.18% | 20.83% | 9.64% | 0.55% | 11.66% | 1.32% | 14.90% | 0.18% | 9.70% |
The total percents of each interval output unit in the training set:
| -12 to -6 | -5 to -3 | -2 to -1 | 0 | +1 to +2 | +3 to +5 | +6 to +12 |
| 2.89% | 11.41% | 28.77% | 18.81% | 22.08% | 11.82% | 4.18% |
The total percents of each interval in the training set:
-18 interval: 0% (-1.5 octave)
-17 interval: 0.0251%
-16 interval: 0%
-15 interval: 0%
-14 interval: 0%
-13 interval: 0%
-12 interval: 0.4761% (-1 octave)
-11 interval: 0%
-10 interval: 0.0501%
-9 interval: 0.3633%
-8 interval: 0.1253%
-7 interval: 1.6788%
-6 interval: 0.1754% (-0.5 octave)
-5 interval: 2.9316%
-4 interval: 3.1070%
-3 interval: 5.3746%
-2 interval: 18.4916%
-1 interval: 10.2856%
0 interval: 18.8173% (no change)
+1 interval: 7.7675%
+2 interval: 14.3197%
+3 interval: 5.3746%
+4 interval: 2.6685%
+5 interval: 3.7835%
+6 interval: 0.0752% (+0.5 octave)
+7 interval: 1.8667%
+8 interval: 0.8519%
+9 interval: 0.7893%
+10 interval: 0.1629%
+11 interval: 0%
+12 interval: 0.3257% (+1 octave)
+13 interval: 0.0125%
+14 interval: 0%
+15 interval: 0.1002%
+16 interval: 0%
+17 interval: 0%
+18 interval: 0% (+1.5 octave)
The total percents of chords that appear in the training set:
| Chord | Percent as the current chord | Percent as the next chord |
| Am | 24.27% | 23.36% |
| C | 19.69% | 21.38% |
| Dm | 14.39% | 14.82% |
| G7 | 12.02% | 11.11% |
| E7 | 10.34% | 10.06% |
| F | 6.50% | 5.52% |
| G | 3.38% | 3.85% |
| A7 | 3.08% | 2.46% |
| Em | 1.86% | 1.86% |
| E | 1.52% | 1.82% |
| B7 | 0.68% | 0.83% |
| A | 0.57% | 0.60% |
| D | 0.30% | 0.37% |
| D7 | 0.25% | 0.15% |
| Bm7 | 0.25% | 0.06% |
| Dm7 | 0.17% | 0.07% |
| Gm | 0.16% | 0.16% |
| Am7 | 0.15% | 0.27% |
| C7 | 0.15% | 0.05% |
| Bb | 0.13% | 0.05% |
| B | 0.05% | 0.07% |
| Silence * | - | 0.98% |
* Silence appears in the training set only at the end of the song, and only as the next chord.
