Jacob Obrecht: Missa Sub tuum praesidium
Josquin des Prez: Salve regina à 6
Perotin: Beata viscera
Messine chant (10th c.)
Tickets $17 ($14 for students and seniors). Discounted 5- and 10- ticket booklets available from www.oldfirstconcerts.org
Last year's Missa de Tournai was excellent and I'm sure this will be too. Good luck with that weekend, which is mobbed: Brahms Requiem at SFS, BluePrint plays music of Phillippe Hesant at SF Conservatory, Chora Nova sings Mozart Requiem and Coronation Mass, and goodness knows what else.