This musical robot analyzes the incoming audio and tries to mimic it using a series of servos and solenoids attached to different objects. In this example it is trying to reproduce a clip from Citizen Kane.

Simple automatic instruments are constructed from local materials and objects on site. The system learns the sounds it can make by trying out its instruments, and then uses its range of sounds to try to reproduce the rhythmic and melodic qualities of sounds such as the voices of visitors. It then loops and alters these imitative sequences into improvised compositions

via – digg – The Looping Musical Robot