midish

Midish is an open-source MIDI sequencer/filter for Unix-like operating systems. Implemented as a simple command-line interpreter, it's intended to be lightweight, fast and reliable for real-time performance.

Important features: - multiple MIDI devices handling - synchronization to external audio/MIDI hardware/software - real-time MIDI filtering/routing (controller mapping, keyboard splitting, ...) - track recording, metronome - basic track editing (insert, copy, delete, ...) - progressive track quantisation - import and export of standard MIDI files - tempo and time-signature changes - system exclusive messages handling - unlimited undo

Contents: - midish - the sequencer/filter - smfplay, smfrec - MIDI file player and recorder

See also the user manual (manual.html).