nojux-official/chord2midi

chord2midi

This Python script generates a MIDI file with a chord progression based on the specified parameters.

CLI usage

python generate_midi.py --scale-root C --chord-degrees 1 4 5 --output-file cmaj_145.midi

This command will generate a MIDI file named cmaj_145.midi with a chord progression of C major, F major, and G major chords.

Arguments

• --scale-root: The root note of the scale (e.g., C, Cmaj). Default is C.
• --chord-degrees: Chord degrees in the scale (e.g., 6 4 1 5).
• --chord-types: Chord types corresponding to the degrees (e.g., minor major major major).
• --output-file: Output MIDI file name. If skipped, filename will be generated automatically.
• --chord-duration: Duration of each chord in ticks. Default is 960 ticks.

API usage

Start a server using: python app.py The server will be started on port 5000.

A sample request with curl to be saved on generated_midi.midi:

curl -G "http://127.0.0.1:5000/generate_midi" --data-urlencode "scale_root=C" --data-urlencode "chord_degrees=1" --data-urlencode "chord_degrees=4" --data-urlencode "chord_degrees=5" --data-urlencode "chord_duration=960" --output generated_midi.midi

Or directly via a browser with the following url: http://127.0.0.1:5000/generate_midi?scale_root=C&chord_degrees=1&chord_degrees=4&chord_degrees=5&chord_duration=960

Query Parameters

• scale_root: The root note of the scale (e.g., C, Cmaj). Default is C.
• chord_degrees: Chord degrees in the scale (e.g., 6, 4, 1, 5). Specify each degree as a separate parameter.
• chord_types: (Optional) Chord types corresponding to the degrees (e.g., minor, major, major, major). Specify each type as a separate parameter.
• output_file: (Optional) Output MIDI file name. If skipped, the filename will be generated automatically.
• chord_duration: (Optional) Duration of each chord in ticks. Default is 960 ticks.

Dependencies

• Python 3.x version
• mido and flask libraries (Install using pip install -r requirements.txt)

Tested with Python 3.10.7

Acknowledgements

This project acknowledges ChatGPT's role in its creation. It aimed to check ChatGPT's coding capabilities for quick project creation.