At Sparks in Electrical Jelly, Jez Winship writes about Peter Strickland’s Berberian Sound Studio, Peter Cargill and the late Trish Keenan of Broadcast, who provide the film’s soundtrack, and the film’s namesake, the great experimental vocalist and composer, Cathy Berberian. It includes fascinating experimental scores for Berberian’s comic-strip derived and cartoon-influenced, “Stripsody,” as well as John Cage’s “Fontana Mix.”