Over at Georgia Tech, there's a robot that plays the marimba and even interacts with its bandmates. Shimon is the second edition of a project that started with the robotic percussionist named Haile. Shimon plays the marimba and boasts most sophisticated algorithms compared to its predecessor.

Since the creators have already accomplished designing a robot that can play a musical instrument with Haile, Shimon focuses on the development of human-robot interaction, although it does create richer sounds according to Georgia Tech. Shimon's head was apparently made to be more interactive and give the other musicians in the band visual cues such as being able to move its head to the beat "sort of getting itself into the groove." It can not only play, it can also analyze harmony, rhythm and melodies so it can adapt human improvisations while playing music.

You can watch a video of Shimon and its creators here.