Sunday afternoon on OSL’s main stage, psych-rock legends Dr. Teeth & The Electric Mayhem finally made their historic live festival debut, in the flesh — or in the felt, as it were — after four decades of backing everyone from Alice Cooper to Miley Cyrus. The hippie city of San Francisco was the perfect place for Dr. Teeth, Janice, Floyd, Zoot, Lips, and everyone’s rock ‘n’ roll animal, Animal, to unveil the most sensational, inspirational, celebrational, Muppetational Muppet show ever. As they kicked out new-school jams (the Mowglis’ fitting “San Francisco,” Edward Sharpe & The Magnetic Zeros’ “Home” reimagined as a Floyd/Janice duet) and old-school classic like the Band’s “Ophelia” and a Joe Cocker-inspired “With a Little Help From My Friends” (the latter with a little help from the Oakland Interfaith Gospel Choir), Dr. Teeth declared this “the first stop on our world tour — and the only stop on our world tour!” However, it all went so well, I wouldn’t be surprised to see the Electric Mayhem headlining Coachella or Glastonbury in 2017.