A little bit about Geo Shred from Moforte...
Geo Shred is a professional musical instrument for iOS devices that lets you create music using a powerful physical model of the guitar … and beyond!
Geo Shred has a unique and responsive user interface for performance and sound design that gives you direct control of dozens of model parameters and effects. With Geo Shred you have the power to make music that comes alive with expression - realistic controllable feedback, finger vibratos, note slides, power chords, auto arpeggios and much, much more.
Designed for the iPad2/iPhone 4s or better, Geo Shred is being jointly developed by Jordan Rudess' Wizdom Music Software and moForte, Inc., and is based on 3rd generation Physical Modeling research of Dr. Julius O. Smith III of Stanford/CCRMA and others.
Check Out The Geo Shred Demo Here