Voice Band is an iPhone app which can convert your voice into ten different musical intruments and produce creative compositions in a matter of minutes. In this example, Rim Buntinas, founder and president of WaveMachine labs demonstrates how easy it is to put together a rock song based on a simple tune in no time at all.
For iPhone users, I could see this app being a fun and engaging way of producing original songs for revising language structures in and out of the classroom which for the not very musical amongst us, could be a particularly attractive proposition!
As long as you can carry a tune, your creativity can know no bounds! Cool!