Homegrown rapper Wiz Khalifa says "Yeah" to the Palace Theatre in Greensburg at 7 p.m. Saturday. Guests on the bill are S. Money, The Finest and Pheni, Tickets: $20, $30; 724-836-8000 or www.thepalacetheatre.org.

Pittsburgh Symphony timpanist Timothy Adams steps out from behind the orchestra to solo in the premiere of his percussion piece, "Kyoto." Yes, the multitalented percussionist can compose, as well. Andres Cardenes will lead the PSO Chamber Orchestra in the work at 8 p.m. Thursday at Carnegie Music Hall in Oakland and at 8 p.m. Saturday at Upper St. Clair High School Theatre. Also on the program is Piazzolla's popular "Four Seasons in Buenos Aires" and Mozart's "Sinfonia Concertante." Tickets are $15-$30; a free master class with PSO violinist Alison Fujito and cellist Adam Liu takes place before the Upper St. Clair concert at 6 p.m. Call 412-392-4900.

International food, music, dance, crafts and shopping will highlight the 52nd annual Pittsburgh Folk Festival, which kicks off Friday for a weekend of fun. It will be held at the David L. Lawrence Convention Center, Downtown. Hours are 4 to 10 p.m. Friday, noon to 10 p.m. Saturday and noon to 6 p.m. next Sunday. Adults are $10 ($8 in advance); children, 4-12, $4; under 4, free. Check out the details at www.pghfolkfest.org.

This Pulitzer Prize-winning play at the Pittsburgh Public Theater takes theatergoers down the topsy-turvy rabbit hole of grief when a couple confront the greatest loss possible. Theater critic Christopher Rawson says David Lindsay-Abaire's drama is a personal play, resisting noisy emotion or melodrama. It ends its run at the O'Reilly Theater next Sunday. Tickets: www.ppt.org or the box office.