arpeggigo

arpeggigo ^{cute, right?} is a command-line MIDI sequencer.

Usage

Requirements

• PortMIDI - available on apt and homebrew.

Flags

• interval (int) - Number of milliseconds between notes. (default 100)
• notes (string) - JSON array of objects with keys "note" (int), "velocity" (int), and "duration" (int). Duration value represents milliseconds. (default "[]")

Example

Given a file notes.json with the contents:

[
  {"note": 60, "velocity": 100, "duration": 50},
  {"note": 64, "velocity": 75, "duration": 100},
  {"note": 67, "velocity": 50, "duration": 150},
  {"note": 72, "velocity": 25, "duration": 200}
]

Execute the following command to loop over the notes defined in notes.json with 500 milliseconds between each note:

./arpeggigo -notes "$(< notes.json)" -interval 500