Have you ever heard of polyphonic overtone singing? It's a voice technique where it sounds like one person is singing two notes at the same time. It's pretty amazing.

HOW MUCH: Free with two nonperishable items for the cathedral food pantry The eighth annual “Children’s Messiah” will ring in the holidays at the Episcopal Cathedral of St. John on Saturday, Dec. 16.

We have all heard it, yet most of us would not be able to name it. The term polyphony (from the Greek for “many sounds”) is used to describe music that employs simultaneous yet independent melodies.

Congregation Emanu-El has announced the season launch of the upcoming Cantors' Concert Series on Saturday, December 7 at 7.30 p.m., presenting the San Francisco debut of POLYPHONY, the renowned and ...