The three works selected for Soundtracks are Sphere Packing: Mozart (2014; white polymer, 565 audio channels), Sphere Packing: Wagner (2013; glazed porcelain, 110 audio channels), and Sphere Packing: Cage (2014; plastic, 269 audio channels)-- an abridged walk through the eighteenth, nineteenth, and twentieth
centuries.2 The series as a whole, featuring seventeen
composers, constitutes nothing less than a broad history of
classical music, with surprising insights in terms of productivity, ranging from seventeen compositions (by Claudio Monteverdi) to 1,128 (by Johann Sebastian Bach).
Birnbaum's more recent work Arabesque (2011) abandons such anachronistic technology to apply a feminist critique to the history of
classical music, invoking the story of Robert Schumann and his wife Clara, a 19th -
century composer couple whose artistic talents were more equally matched than their relative levels of renown would suggest.