Glide Memorial Church musical director Vernon Bush is a dynamic presence leading the Glide Ensemble, using his experience as a preacher's kid and his love for community to lift the diverse group – and the congregation — higher. Total SF hosts Peter Hartlaub and Heather Knight watch and record a Glide Ensemble rehearsal, then join Bush on stage to talk about his upbringing near choirs, the church's history and how he feels about the Tenderloin District making the news. And Bush tries to explain what it's like leading a choir when Joan Baez, Bobby McFerrin or Bono might drop by at any time. Produced by Peter Hartlaub. Music from the Sunset Shipwrecks off their album "Community," Castro Theatre organist David Hegarty and cable car bell-ringing by 8-time champion Byron Cobb. Follow Total SF adventures at www.sfchronicle.com/totalsf  Learn more about your ad choices. Visit megaphone.fm/adchoices