The Three Rivers Arts Festival covers a contrasting trio of genres as it comes to a close this weekend. Friday is World Music Day with two performances by Jontre (at noon and 6:30 p.m.); world music group Red Baraat will perform at 7:30 p.m. On Saturday we’ll hear Jazzam at 12 p.m., New Victorians at 5 p.m., Leagues at 6:30 p.m., and indie-rock band The Airborne Toxic Event will perform at 8 p.m. The festival wraps up with Bluegrass Day on Sunday. River City Brass Band performs at 1 p.m., Curtis Lewis Gospel performs at 6:30 p.m., and the Blind Boys of Alabama hit the stage at 7:30 p.m.. All performances take place at the Dollar Bank Stage. More information can be found at www.3riversartsfest.org or by calling 412-471-3191.