
video posted
here.
"Voxkit is a MIDI drum controller with a twist. In addition to touch pads on the screen, you can trigger notes with sound. Clap your hands, tap a pencil on a desk, or use your voice -- Voxkit detects the tone of the sound, to trigger a sample from the app, or a MIDI note.
You can customize the sounds that Voxkit makes -- add WAV format samples through iTunes File Sharing, to make the drum kit of your dreams.

Record your playing with the app, and then export the results as a WAV file (with Audio Copy, iTunes File Sharing, or by email). MIDI events are recorded too, with the same sort of export options.
With Audio Paste, you can import a song that you're working on with another app, and then add a track of live drumming.
By listening to external sounds, rather than just the touch on a screen, Voxkit can capture the subtle velocity and rhythm variations of real drumming.
There are hundreds of apps that will let you program drums on a grid -- and you wind up with something that sounds stale and mechanical. Break free with Voxkit!"
iTunes:
Voxkit! - Secret Base Design
iPads on eBay
iPod Touch on eBay