It was music, sun, fun, and rock stars on the slopes this past Saturday for the fourth annual Boarding for Breast Cancer show at Lake Tahoe's Sierra-at-Tahoe resort. The all-day benefit concert featured Ozomatli, Spearhead, Blink 182, Less than Jake, tha Alkaholiks, and former Porno for Pyros members Mike Watt, Stephen Perkins, and Peter DiStefano.

The hot weather brought a summer-festival feel to the show, with tank-top clad teenagers riding the slopes and bands joining each other onstage throughout the day. Mike Watt invited Ozomatli's horn section on for a song with the group during its opening set.

Michael Franti of Spearhead looked like he had taken a ride or two down the mountain: he was wearing snowboarding boots when he hopped onstage to join Ozomatli early in the day. Rapper J-Ro of tha Alkaholiks could be seen taking a boarding lesson after the band's set.

"I've been waiting all day to get out here and learn how to do it," J-Ro said as he waited in the lift line.

Wearing an Alkaholiks T-shirt on the sunny day, J-Ro made an admirable effort down the slope. And did he get any bruises from his ride? "Everywhere," he joked.

The 45-minute music sets were interspersed with half-pipe demonstrations by professional snowboarders, and guest speakers telling of their experiences surviving breast cancer. The festival also featured educational booths, awareness-raising exhibits, and a photographic display telling survivors' stories.

Previous Boarding for Breast Cancer benefits have featured Foo Fighters and Royal Crown Revue in 1998, Primus and Luscious Jackson in 1997, and the Beastie Boys in 1996. Proceeds from the concert go to Breast Cancer Foundation, the Susan G. Komen Foundation, and the Nina Hyde Center for Breast Cancer Research housed at the Georgetown University Medical Center.