Given that the iPhone offers more processing power than the original iMac, this next story had to happen: December 9 will see a live performance by an orchestra, each and every one of whom will be using an iPhone to make the music happen.Students at the University of Michigan are learning to design, build and play instruments on their Apple smartphones as part of a course called "Building a Mobile Phone Ensemble". This course is taught by Georg Essl, a computer scientist and musician who has worked on developing mobile phones and musical instruments.This class, believed to be the first formal course of its type in the world, merges engineering practices, mobile phone programming, and sound synthesis with