Philip Glass’s 1970 composition Music with Changing Parts represents a shift in his style from the more austere minimalism of his 1960s compositions to something a bit lusher and texturally dense — if still very much within the mainstream of the minimalist movement. This recording of the work by the Salt Lake Electric Ensemble is a realization of the piece using laptop computers, keyboards, and a variety of analog instruments, and the group creates a pulsing, shimmering wall of sound that manages to make a single chord sound interesting for over 45 minutes.