Have you heard about Flow Machines yet? The Paris based Sony Computer Science Laboratories (Sony CSL) created Artificial Intelligence that can compose music in the style of any artist. Just input the songs you want it to analyze, enter the required length and off you go. They have examples of Bach, Miles Davis and a couple others. Here's their take on The Beatles: It's almost there, but not quite. To my ears it's way more Andy Partridge (of XTC) than it is Lennon-McCartney, but XTC was influenced by the Beatles big time, so it's all good. Kinda.