Cantus Manifesto Signum Classics   The all-male vocal ensemble Cantus’s first full length recording in seven years, Manifesto, features pieces, all in world premiere recordings, that explore relationships and identity. The title work is a piece by David Lang, the text taken from answers to a Google Search auto-complete list of the query “I want to be with someone who…” It was originally commissioned by Cantus for a program titled “The Four Loves.” Lang’s piece signifies romantic love and is written in a minimal style, the textual repetitions being a hallmark of his approach. “If I Profane,” by Libby Larsen,