BERKELEY HEADLINERS: Both Chicago and Earth, Wind, and Fire are playing Friday at The Greek Theatre in Berkeley. The show starts at 7:30 p.m. and tickets are $39.50 to $125.50.
FREE OFFSPRING: The Offspring are playing a free concert Friday at The Warfield in San Francisco as part of Summer Krush. Be there at 8:00 p.m.
GET LEI'D: Can't afford to vacation in Hawaii this summer? Head over to the San Francisco Aloha Festival on Saturday from 10 a.m. to 5 p.m. for authentic dance, music, and food. Admission is free.
BEER GARDEN: On Sunday, a $10 ticket will get you into Biergartenfest 2009, a Bavarian festival in Oakland full of German food and beer, music, and dancing.
SONIC BOOM: Rock band Sonic Youth is performing on Sunday at Fox Theatre in Oakland at 8 p.m. Tickets are $35.50.