There are at least two artists that go by the name Robot Orchestra:

A band from La Rochelle, Poitou-Charentes, France. Their music is a blend of post hardcore, and indie rock with elements of punk and math rock at times. Their album, Disorder Of Colors, which was released in September, 2009, is available for free at http://robotorchestra.bandcamp.com/. They entered the studio in August, 2011 and recorded material for their upcoming 2nd album which should be released in December of 2011.

A self taught musician and hip-hop producer from Cologne/Germany. Specialising in hip-hop beats and beat tapes, Robot Orchestra is inspired by beat masters such as J-Dilla, Pete Rock and Dj Premier. You can purchase his music from: http://robot-orchestra.bandcamp.com/