The cornucopia, or horn of plenty -- broken off the goat who helped to nourish the baby Zeus on the island of Crete and endowed by Zeus with the power to replenish its contents, or so the story goes -- is an apt metaphor for the abundance of vocal polyphony in the European tradition that has come down to us, and, for many, the nourishment this music provides. Convivium Musicum, Choir for Renaissance Music, celebrates its return to live performance with a program on themes of growth, plenty, and variety: in texts, musical techniques, and composers. Works by Byrd, Aleotti, Senfl, Rossi, Schütz, Lusitano, Sweelinck, and more.