Hi guys! My name's Nick and I help out with MAGFest. I noticed you had linked to us in this thread, so I figured I'd pop in and answer any questions you might have. MAGFest is more or less a 4 day long party with gaming all weekend, and live video game cover bands every night. Unfortunately our main stage is full, so we wouldn't be able to book piano squall for that, but we have a second stage called the Jamspace that he'd be more then welcome to play. The Jamspace is basically a room where we provide a full stage setup (drums, piano, guitar, bass, sound system), and anyone is allowed to come up and jam with each other.
Let me know if there's anything else you guys want to know about MAGFest and I'll be glad to help!