The source material for every piece on Playthroughs is guitar: acoustic, electric or otherwise. From Sept. 2001 to April 2002 Keith Fullerton Whitman transformed those guitar pieces via laptop computer into the tracks on Playthroughs. Whitman has used ring modulators, granular shuffling algorithms, delays and spectral effects in a process that owes a lot to Terry Riley's Time Lag Accumulator and Steve Riech's 'Piano Phases.' Technology and Whitman's careful selection of notes combine to create shimmering drones and deep waves of sound. Though the source material was improvised guitar and the processing involved computer technology, Playthroughs reflects Whitman's mastery of composition.