chipPad for iPad from earsmack on Vimeo.
"More information at earsmack.com/
This is a preliminary simulator-based demo of chipPad for iPad. In reality it does not do the app justice since it's all multi-touchy and whatnot and is a complete joy to jam on. More videos of it in action forthcoming. It was submitted to the app store on April 5th, 2010 and will be available soon for an introductory price of $3.99.
Please excuse my mouse-based screw up - that doesn't happen when you're jamming with your fingers ;-)
From the app store description: chipPad is a multi-track sample and loop playback and performance application. It is made for the musician who creates loop-based music and is looking to experiment with on-the-fly arrangements or to glitch it up a notch. By adding your own pre-cut loops on up to 8 tracks you can perform using various "grid-based" controller techniques and develop new ones that are only capable on a multi-touch device. Sliding one or multiple fingers back and forth on various tracks or tapping rhythms like on a drum machine can yield some amazing results you can't hear elsewhere. chipPad comes with a few sample sessions to get you started. Simply select Help from the Gear menu to get started or load your own AIF or WAV audio files into the app using File Sharing via iTunes.
Enjoy!"
Update:
chipPad for iPad (Live) from earsmack on Vimeo.
"Here is a video of me playing each of the sample sessions that come with chipPad. Hopefully this will show a bit of how the application can work in a live situation. Green tracks are playing forwards, blue tracks are playing in reverse and red tracks are queued to begin playing at the next quantization point (based on the master track - the one with the white metronome glider.)
Enjoy!
More information at earsmack.com/"