It is annoying as hell to get to, cold, and ridiculously difficult to find seats at, but its free. And its the Stern Grove Concerts.
Admission Free Concerts2011 SEASON
The one that I am particularly interested in is the one on June 26, Jazz Mafia: Emperor Norton Suite:
Innovative Bay Area ensemble Jazz Mafia Symphony perform their genre-defying fusion of jazz, funk, hip-hop, electronica, and symphonic music.
The program includes the world premiere of a new work,Symphony No. 2, The Emperor Norton Suite, celebrating the spirit of San Francisco’s favorite eccentric.
Chali 2na, known for his MC skills with hip-hop group Jurassic 5 and Ozomatli, guest stars.
Might be something to check out. I am not sure I can make it due to a conflict, but I enjoyed their first suite a few years back. So, go! And maybe there is something else on there that interests you.
But make sure to show up early, otherwise it gets PAAAAAAAAAAAAAAAACKED!