This year Blues Traveler will once perform at Red Rocks Amphitheatre on July 4. The evening will take on a different tenor, however, as Lewis Black will be opening for the group. The comedian, whose love for live music has been evidenced by his association with the Bonnaroo Music Festival, will join a bill that also includes Black Joe Lewis & the Honeybears. Tickets for the show, which will start at 6PM on Independence Day, go on sake this Saturday at 10AM.