iOS developer Audanika shared this sneak peak at SoundPrism for the iPhone, iPod touch. SoundPrism uses a unique keyboard layout.
Here's what they have to say about this preview of SoundPrism:
Most people were asking for an iPod/iPhone version of soundprism, so we made one :) As you can see, it works nicely on this 3rd generation iPod. We're still working on the interface so what you see is an alpha version.
See the Audanika site for more information.