Ak-Chin Pavilion (originally known as the Desert Sky Pavilion) is an amphitheater located in Phoenix, Arizona, which seats 8,106 under a pavilion roof and an additional 12,000 on a hillside behind the main stands. It opened on November 11, 1990 (Billy Joel was the venue's inaugural performer). The naming rights sponsor is the Ak-Chin Indian Community (the venue is not located on tribal land). With a total capacity of 20,000, its capacity is higher than Footprint Center and Desert Diamond Arena. The amphitheater's season starts in April and closes in October.