The program is extremely flexible, all it requires is that you have an external MIDI device generating a clock and it will output notes in time to a pattern sequence you specify.

Features:

- you can't record patterns, only input them via mouse

- 128-note polyphony

- you can run as many pattern sequencers simultaneously as your CPU can handle

- you can store as many patterns as you want per sequencer

- while playing, transitions to the next pattern don't occur until the current pattern is done playing

- variable pattern length: 16, 32, 48 and 64 notes

- variable note length: 16th note through whole note in 16th note steps

- fixed note-on velocity 0x64

- play/stop must be driven from an external MIDI source

- MIDI clock must be from an external MIDI source

- can drive any hardware or software MIDI device

- can echo MIDI clock to the external MIDI device (for arpegio or whatever)