Boys and men's choirs, and male soloists from around the world, perform with guest conductors David Hill and Julian Ackerley at 3 p.m., Sunday, July 31. The program includes Felix Mendelssohn's Laudate Pueri Dominum, Giulio Caccini's Ave Maria, and Paul Radin's Walk in Jerusalem among others. $15. Call 733-0927, or visit internationalchoralfestival.com for tickets or more information.