It features the fascinating Guitar Bot, a four-stringed contraption that plays a MIDI stream of a guitar part composed by Reynolds and fed from his onstage MacBook. Which also fed the two Mod Bots, percussion units that added split-second accents in a variety of textures. These were as fascinating to watch as to hear, yet they blended nicely with Reynolds, playing amplified violin, and the ensemble. It was a thrilling demonstration of how to put computer-driven acoustic instruments in the service of live performers.