In an announcement made by The Cynthia Woods Mitchell Pavilion, the Monster Energy Houston Open Air scheduled for October 14 and 15 has been cancelled due to unforeseen circumstances. Artists at this event included Avenged Sevenfold, Marilyn Manson, Prophets of Rage, Of Mice & Men, Stone Sour and more. All tickets purchased online or by phone through Ticketmaster will be refunded automatically. Customers should allow up to 3 weeks for the refund to be processed. If purchased directly from The Pavilion box office,  tickets can be refunded in person.