Foghat will open for Blue Oyster Cult at the UltraStar Amphitheater as part of Harrah’s Ak-Chin Casino’s free concert series. Gates open at 6 p.m., Foghat will be on stage at 6:30 p.m., and Blue Oyster Cult will follow at 8 p.m. Lawn seating available on a first come first serve basis.