Dave Matthews [ tickets ] and Tim Reynolds [ tickets ] will play an acoustic show April 6 at Indiana University in Bloomington to raise awareness for Barack Obama's presidential campaign, according to a press release.

"Change Rocks--A Very Special Evening with Dave Matthews and Tim Reynolds" will be free to all Indiana residents who present an Indiana state ID or in-state student ID. Tickets for the show, which will be held in the University's Assembly Hall, will be limited to two per person, first-come, first-served.