To get a sense of what San Francisco was like when Fillmore Street was the most important scene for West Coast blues, head to this little venue that packs a big sound. Opened by the venerated Mississippi bluesman John Lee Hooker, in the last years of his life it wasn’t just his business but his hangout. Today, though it still maintains street cred as a blues hall, it plays host to root music as well, ranging from New Orleans funk to trance jazz. The monthly Soul Train Revival draws a big crowd of weekday warriors who want to shake it on a Wednesday.