Easy way to convert standard musical notation to Sonic Pi notation

Creations & Ideas
1

By exporting sheet music from MuseScore and other programs into uncompressed MusicXML format, I was able to easily convert it into a list usable in Sonic Pi using Python’s music21 library.
I used Gemini to assist with the programming.
I’m using macOS terminal.

Usage
python xml2noteC.py < MusicXMLtest.musicxml

xml2noteC.py

import sys
from music21 import converter, note, chord

def main():
input_binary = sys.stdin.buffer.read()
if not input_binary:
return

try:
    score = converter.parse(input_binary)
except Exception as e:
    sys.stderr.write(f"Error parsing input: {e}\n")
    sys.exit(1)

score_tied = score.flatten().stripTies()

elements = score_tied.notesAndRests
results = []

for el in elements:
    duration = float(el.duration.quarterLength)
    
    duration = round(duration, 3) if duration % 1 != 0 else int(duration)

    if isinstance(el, chord.Chord):
        pitches = [f":{p.nameWithOctave.replace('#', 's').replace('-', 'b')}" for p in el.pitches]
        content = f"[{','.join(pitches)}]"
    elif isinstance(el, note.Note):
        p_name = el.pitch.nameWithOctave.replace('#', 's').replace('-', 'b')
        content = f":{p_name}"
    elif isinstance(el, note.Rest):
        content = ":r"
    
    results.append(f"[{content},{duration}]")

if results:
    print("[ ",end="")
    print(",".join(results)+" ]")

if name == “main”:
main()

Output
[ [:C4,1],[:Cs5,1],[:Db4,1],[:G4,2],[:r,1],[[:C4,:E4,:G4,:C5],0.75],[[:D4,:Fs4,:A4,:D5],1.25] ]

#Usage on Sonic Pi

a=[ [:C4,1],[:Cs5,1],[:Db4,1],[:G4,2],[:r,1],[[:C4,:E4,:G4,:C5],0.75],[[:D4,:Fs4,:A4,:D5],1.25] ]

a.each do |i,j|
play i
sleep j
end

MusicXMLtest
MusicXMLtest856×164 5.86 KB

MusicXMLtest

Explanation in Japanese

https://shakuhachi.sub.jp/SonicPi/#MusicalNotatonToSonicPi

5 Likes
2

Super cool and useful! Thanks so much!