This hilarious San Francisco Jazz Festival commercial shows three intimidating men in a gold low rider car while listening to a piano trio. As they begin puling up to a stoplight one of them points out a pedestrian, and the driver promptly changes the radio to a rap song. Next, all three men reposition their posture and stare at the pedestrian when they come to a full stop. Finally, as they pull away, the driver returns the radio to the piano trio as the men readjust their posture more upright positions. I've never seen another commercial for a jazz festival, but I think this one is hilarious and effective.