Spheres and Splinters is a new work composed by Tod Machover for hypercello, electronics, and responsive visuals commissioned fo Faster than Sound at Aldeburgh Music. The work premiered with celllist Peter Gregson in the UK in 2010 and had its US premiere as part of FAST Festival of Art, Science, and Technology in celebration of MIT's 150th anniversary. Utilizing audio analysis and a multitude of wireless sensors on the cello and the bow that capture how the instrument is being played, the performer has control over transformations and extensions of the sound produced. This control extends into the ambisonic spatialization of sound in the performance space. The performance data is also used to produce realtime visual accompaniment on an array of LED strips surrounding the cellist.