The i-Phone As A Musical Instrument

Ever since Apple opened up the i-Phone, apps for it seem to crop up daily. I don't think too many people saw this one coming: The i-Phone-As-Musical-Instrument. True enough, this app "senses" the pressure of one's breath on the microphone. Digital keys show up (in the classic ocarina pattern) on the face allowing an individual to play the i-Phone. Really! Check it out.