JACK-midi applications. The display can be completely driven by MIDI events and it can also send MIDI events.

It can also be self-driven and hence run without jackd although this is somewhat less interesting since it becomes just a visual metronome.

The current features are:

• A visual metronome with arbitrary time-signatures.
• The display of arbitrary lines of text, e.g. to give instructions to the musician(s).
• Custom keyboard bindings to send arbitrary MIDI events.