Monteverdi so dominates the picture of early 17th-century Venetian music that it"s easy to forget he had talented students and colleagues. Rigatti, one of the most promising, might have succeeded Monteverdi at San Marco had he lived beyond age 34. This recording reconstructs a Mass for the Feast of the Purification (a.k.a. Groundhog Day) around Rigatti"s Messa à 8; also included are contemporary motets and sonatas (including one each by Monteverdi and Gesualdo). Rigatti"s Mass has some attractive moments, though his melodic inspiration occasionally flags; the motets and sonatas are lovely, as is all the instrumental playing (especially by violinist Marc Destrubé). The choir sounds a bit large for this repertory, and its singing may a lack certain polish, but it"s never less than competent. Matthew Westphal