Johnny "Shellhead" and Jen Shag, two halves of Brooklyn indie duo Shellshag, got their individual starts in the '90s San Francisco D.I.Y. scene, while running the infamous Starcleaners Warehouse -- a historical music co-op in the Mission District that was formerly home base to the Residents, the Dandy Warhols, and the Brian Jonestown Massacre. They crossed paths when Johnny was a member of the band 50 Million and Jen was in Static Faction, and soon after, they teamed up to form a power pop trio called Kung Fu USA. In 2003, they stripped back the group and re-formed as Shellsha...