"This is a celebration of 25 years of cleaning up beaches and making beaches barefoot friendly," DeGraw told Spinner. "Even though it's raining and the weather is not necessarily perfect today, [the volunteers] still showed up. The cause, I think, is good enough motivation."

Joss Stone performed with her full band, gracing the audience with a beautiful cover of 'No Woman, No Cry.' Before the final song of her encore, the soul singer went backstage and came out with a dozen white roses, which she tossed into the crowd. DeGraw entertained the crowd and thanked them for their participation in the event, closing his set with his smash hit, 'I Don't Want to Be.' Cold War Kids played all of their hits -- 'Hang Me Out to Dry,' 'Something is Not Right With Me,' 'I've Seen Enough' -- while Mason Jennings ended his set with 'Sunlight' from his forthcoming album, 'Blood of Man.' Proceeds from the sale of the singer-songwriter's single, 'Sunlight,' will be donated to the Surfrider Foundation.

DeGraw, a longtime supporter of the environmental organization, also added, "When they leave the concert I want them to take away with them, other than a great time, some socially conscious perspective."

This marks the third year of the Barefoot Wine Surfrider Foundation Beach Rescue Project, which has featured performances by Tristan Prettyman, G. Love and Jill Cunniff in past years.