All summer, Warner Bros. Records have been holding their free summer concert series, Summer Sessions, right outside their building in Burbank, California. This past Friday, the label teased a surprise guest. Who would show up? DEFTONES! The band would use the summer concert as a warm-up for their sold out concert the next night at the Troubadour. Our photographer Marcello Ambriz was there Friday to get some great shots of the band. Check them out below and head over to deftonesworld.com to see two videos of new songs and the band’s upcoming tour dates with System of a Down.