What’s that you’re hearing? Well, it’s not the usual four-piece band that we often feature. This is the San Francisco Lyric Chorus. The Chorus will be only a portion of what you’ll hear when they combine voices with the Rochester, New York, Oratorio Society, along with the Redwood Symphony, in performing the Berlioz Requiem, and other pieces, this coming Sunday, August 5. It’s an afternoon show at Davies Symphony Hall in San Francisco, starting at 3 pm.