midiPLY modifies MIDI in real-time, it multiplies incoming MIDI notes and overrides tracks that are synced.

With this app you can find undiscovered sounds by using it on combinations of midi tracks and sounds.

midiPlY is ideal for use with drums and percussion tracks.

To use, just setup a midi sequencer and any midi sound module or a sampler that plays drum set sound in your Mac. Be sure the sequencer sends midi from any available virtual bus. (Note that GarageBand does not do this but ProTools does.)

Launch midiPLY, set BPM (default = 120) and click on the “PRESS” or hit Space Bar to activate. Press [H] for hints to use each controls.

This app is meant for real-time modification of a ready made midi track. You can also use it to go outside your usual melody lines.