In Ricercare una melodia, an ingenious work for solo instrument and tape delay from the mid 1980s, Jonathan Harvey takes the literal meaning of Ricercare---to seek---as the inspiration for its structure. It unfolds as two fivepart canons---the first frenetic, twittering, and rowdy, the second (where the canon is progressively augmented) more luminous and contemplative. A characterful and concise masterpiece from one of the visionaries of electroacoustic music.