asigalov61/Monster-Piano

Monster Piano

580204 solo Piano MIDI scores representations from Monster MIDI dataset

---

Installation and use

---

Load dataset

#===================================================================

from datasets import load_dataset

#===================================================================

monster_piano = load_dataset('asigalov61/Monster-Piano')

dataset_split = 'train'
dataset_entry_index = 0

dataset_entry = monster_piano[dataset_split][dataset_entry_index]

midi_hash = dataset_entry['midi_hash']
midi_score = dataset_entry['midi_score']
midi_signature = dataset_entry['midi_signature']

print(midi_hash)
print(midi_score[:15])
print(midi_signature[:4])

---

Decode score to MIDI

#===================================================================
# !git clone --depth 1 https://github.com/asigalov61/tegridy-tools
#===================================================================

import TMIDIX

#===================================================================

def decode_to_ms_MIDI_score(midi_score):

    score = []

    time = 0
    
    for m in midi_score:

        if 0 <= m < 128:
            time += m * 32

        elif 128 < m < 256:
            dur = (m-128) * 32

        elif 256 < m < 384:
            pitch = (m-256)

        elif 384 < m < 512:
            vel = (m-384)

            score.append(['note', time, dur, 0, pitch, vel, 0])

    return score
    
#===================================================================

ms_MIDI_score = decode_to_ms_MIDI_score(midi_score)

#===================================================================

detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(ms_MIDI_score,
                                                          output_signature = midi_hash,
                                                          output_file_name = midi_hash,
                                                          track_name='Project Los Angeles'
                                                          )

---

Calculate MIDI score signature

#===================================================================
# !git clone --depth 1 https://github.com/asigalov61/tegridy-tools
#===================================================================

from collections import Counter
import TMIDIX

#===================================================================

def get_score_signature(midi_score):

    score = []

    time = 0
    pt = 0
    
    for m in midi_score:

        if 0 <= m < 128:
            time = m

        elif 256 < m < 384:
            pitch = (m-256)

            if time == pt:
                score.append([0, pitch])
            else:
                score.append([time, pitch])

            pt = time

    chords = []
    cho = []
    
    for s in score:
        if s[0] == 0:
            cho.append(s[1])

        else:
            if cho:
                chords.append(cho)

            cho = [s[1]]

    pitches_chords = []

    for c in chords:

        if len(c) > 1:
            
            tones_chord = sorted(set([p % 12 for p in c]))
    
            while tones_chord not in TMIDIX.ALL_CHORDS_SORTED:
                tones_chord = tones_chord[:-1]

            pitches_chords.append(TMIDIX.ALL_CHORDS_SORTED.index(tones_chord)+128)

        else:
            pitches_chords.append(c[0])
            
    return list(Counter(pitches_chords).most_common())

---

Project Los Angeles

Tegridy Code 2024