Hip-hop star Big Boi will hold a concert for 2,000 fans Monday, along with The Sounds and Locksley, at Seaholm Power Plant in Austin, Texas, as part of South by Southwest, but tickets are only available via foursquare, which teamed up with Pepsi MAX on the event.

Interested fans must follow Big Boi on foursquare and check in at SXSW venues to increase their chances of unlocking the Golden Ticket badge. Those who earn the badge should go to the Pepsi MAX Lot at 3rd and San Jacinto between 11 a.m. and 6 p.m. Monday to claim their pair of tickets.