A few thousand music-loving adventure-seekers on September 9 received quite the idyllic sun-splashed reward when they witnessed this year’s Sound Summit, headlined by Phil Lesh and some extra special “friends.” The eight-hour festival-like show, chock full of five performers plus an avant-garde dance ensemble, took place at a perch high above Marin County, California’s Mill Valley, at a hundred-year-old stone amphitheater near the top of the area’s famed Mt. Tamalpais.

As the sun crested the sky on one of the more perfect afternoons you could ask for in the middle of New York City at the end of August, Phil LeshLesh and his Terrapin Family Band huddled at the side of the stage as the audience hooted and hollered, unable to contain their excitement for the music that was about to come.

Formed from weekly shows at Phil Lesh's Terrapin Crossroads in San Rafael, CA, the Terrapin Family Band featuring Ross James, Grahame Lesh, Jason Crosby and Alex Koford, has become the venue's official house band.