Pittsburgh Shakespeare in the Parks presents "The Tempest," directed by Alan Irvine, at Frick Park's Blue Slide Playground in Squirrel Hill at 2 p.m. Audience members are advised to take a blanket and be prepared for the show to go on in any kind of weather. Performances are free, with donations accepted. Info: www.pittsburghshakespeare.com.
Catch the final concert of the Pittsburgh Symphony Orchestra's opening weekend. Baritone Thomas Hampson will sing Richard Strauss songs, and the PSO's own principal horn player William Caballero will add a performance of the late Romantic German composer's Horn Concerto No. 1. And who can say no to Dvorak's Symphony No. 9, "From the New World"? 2:30 p.m. at Heinz Hall. $20-$93; 412-392-4900.
Julie Heffernan, professor of fine arts at Montclair State University, New Jersey, will give a free public talk about her narrative paintings at 5 p.m. in Kresge Theater, College of Fine Arts, Carnegie Mellon University, part of the School of Art Fall Lecture Series (412-268-2409 or www.cmu.edu/art/lectures).
The haunting, alien sound of the electronic theremin will get a lot of play next month, but Carbondale native Eric Ross will join with percussionist Kenan Foley to showcase its more traditional roots as a jazz and classical-music instrument. The duo will accompany several experimental short films and the concert is presented by the Three Rivers Film Festival. Mr. Ross has performed at Lincoln Center, The Kennedy Center and the Newport Jazz Festival. The concert/screenings start at 8 p.m. at Regent Square Theater. Tickets are $12; www.ShowClix.com at the door.
Comedian Bill Cosby performs as part of the 2nd annual Teal Ribbon Comedy show at the Carnegie Music Hall, Oakland, at 8 p.m. Proceeds benefit ovarian cancer research at Magee-Womens Research Institute. For tickets, $55-$200, www.mwrif.org/384 or 1-888-718-4253.
Bricolage's "Midnight Radio 4: Secret Agents and Spies," infiltrates the black market in postwar Paris with "The Third Man," a shadowy account of the life -- and near death -- of the notorious Harry Lime, at 937 Liberty Ave., Downtown, at 9 p.m. Filled with romance, mischief and intrigue, this noir thriller takes you undercover to the dark and dangerous world of pulp fiction. Arrive early for an interactive Happy Half-Hour in the lobby with refreshments and games. For more info and tickets, $25 for adults; $15 for students/seniors, www.bricolagepgh.org.
The Art Resource Teaching Society hosts its first interactive arts festival, Art Squared, at Market Square, Downtown, 11 a.m. to 10 p.m. both days. More than 40 artists of various media will create their art while teaching/involving the public via games and creative activities. Art auctions, live photo shoots -- learn to be a photographer or model, create your own airbrush art, make a historically accurate medieval helmet and shield, water-gun spin art, professional dance lessons -- various styles, guitar and didgeridoo instruction and laughter workshops are just some of the scheduled activities. Festival proceeds benefit the replacement of youth art education in underfunded Pittsburgh schools via the Art Resource Teaching Society. Free.
"Robert Qualters: Recent Work" opens with a reception for the quintessential Pittsburgh artist from 5 to 8 p.m. at Borelli-Edwards Gallery, 3583 Butler St., Lawrenceville (free). The exhibition continues through Oct. 26 (412-687-2606).
An Artist's Salon of readings, talks and discussion with five London-based author/artists will begin at 7:30 p.m. at SPACE Gallery, 812 Liberty Ave., Downtown (free). Participants are authors Tom McCarthy, Rachel Lichtenstein and Sukhdev Sandhu, poet Caroline Bergvall and conceptual artist Rod Dickinson. The program is held in conjunction with the exhibition "The City & the City," featuring their new media and installation work, along with that of Chris Petit, Emma Matthews and Iain Sinclair, at Wood Street Galleries, 601 Wood St., Downtown (through Dec. 31; 412-471-5605 or www.woodstreetgalleries.org).
Catch the finale of "Broadway or Bust" at 8 p.m. on WQED. It's the last of the three-part documentary series on the the National High School Musical Theater Awards, featuring Pittsburgh CLO chief Van Kaplan and choreographer/educator Kiesha Lalama, who for a few days in June are among the hardest-working folks in show business. Local Kelly and Mancini Award winners, particularly Brooke Tate of Avonworth and Erica Durham of Center, Beaver County, play key roles leading up to the 60 competitors' big Broadway show.