Rihanna (Photo by Rob Kim/Getty Images)

INDIANAPOLIS (AP) — Imagine Dragons, Rihanna and Zac Brown Band will perform for free this weekend in Indianapolis as part of the festivities surrounding the Final Four. Imagine Dragons and Weezer will perform Friday at the NCAA March Madness Music Festival. Rihanna, Passion Pit and Bleachers will perform Saturday. Zac Brown Band, Lady Antebellum, Kacey Musgraves and Cole Swindell perform Sunday.