All singers welcome to join EMU choral director Brandon Johnson and members of this local professional vocal ensemble in a performance of Mozart’s final masterpiece, unfinished when he died in 1791. Mozart’s widow Constanze was responsible for a number of stories about the work’s composition, including one that Mozart came to believe that he was writing the Requiem for his own funeral. Tonight, participants rigorously rehearse the piece and then perform it in its entirety to an audience. No audition required; singer registration $5. Music provided (or bring your own Süssmayr edition, if you have it, digital score available on the website). Business casual attire suggested for singers. Spectators welcome. Check-in begins at 3 p.m., with rehearsal starting promptly at 3:30. 7:30–8:20 p.m., EMU Pease Auditorium, 494 College Pl., Ypsi. Tickets pay-what-you-can at beyondchoir.org & at the door. (734) 203–0753, [email protected].

Aug. 13–16 & 19–22. Karrie Waarala directs local actors in Cleveland playwright Eric Coble’s 2009 dark satire exploring art, commerce, and censorship. The plot, based on a 1996 staging of Tony Kushner’s Angels in America in Charlotte, North Carolina, follows a theater company in a major Southern city as it puts on a controversial play featuring foul language, homosexual themes, and 7 minutes of full frontal male nudity. Leading up to the premiere, the city’s mayor brings legal action, locals threaten to burn the theater down, and the terrified actors exchange cans of pepper spray as opening night gifts. “The broad laugh-out-loud humor narrows slowly toward a poignant ending, making a fantasy into a reality,” writes one Charlotte Observer reviewer. 7:30 p.m. (Thurs.–Sat.) & 2 p.m. (Sun. & Wed.), Riverside Arts Center, 76 N. Huron St., Ypsi. Tickets $20 (students & seniors, $15) in advance at ptdproductions.com & at the door. (734) 483–7345.

Performance by an ensemble of 4 Detroit-area improvisers with over a century of combined experience. 7:30–8:30 p.m., 2350 W. Liberty. $10 in advance at heardotsay.com/events & $12 (if available) at the door.

Every Wed.–Sun., June 25–Aug. 30. (See review) Kate Thomsen directs longtime Purple Rose resident playwright Carey Crim’s comedy-drama about a group of old friends gathered to celebrate their friend Emma’s fourth wedding. Together, they revisit their memories of each of her previous three weddings to “the one.” Adult language and subject matter. 3 p.m. (Wed., Thurs., & Sat.), 8 p.m. (Fri. & Sat.), & 2 p.m. (Sun.). 137 Park St., Chelsea. Tickets $31.50–$52.50 in advance at purplerosetheatre.org, (734) 433–7673, & (if available) at the door. Discounts available.

Aug. 7–22. Emily Wilson-Tobin directs local actors in Anthony King and Scott Brown’s 2-man musical about a pair of aspiring playwrights who perform all the parts in a run-through for potential backers of their new, hilariously ill-advised project—a big, splashy musical about printing press inventor Johannes Gutenberg. Adult themes. 8 p.m. (Thurs., Fri., & Sat.) & 2 p.m. (Sun.), Cahoots, 206 E. Huron St. Tickets $28 (seniors, $25 & students, $20) in advance at pennyseats.org & (if available) at the door.

Sets by area stand-up comics. 8 p.m., 1031 Broadway. $13 at the door. instagram.com/lowertowna2.

See 13 Thursday. Tonight: Krystle Dellihue’s ASHE, about the pivotal moment when Arthur Ashe’s HIV diagnosis is on the verge of being exposed by the press. 8 p.m.

Every Sat. Rotating lineup of two local improv troupes. 8:30 p.m., 2350 W. Liberty. $10 in advance at heardotsay.com/events & $12 (if available) at the door.

Drag show hosted by Blonski and Portia Lynn, with performers TBA. Age 18 & up. Doors open at 8:30 p.m. 9–10:30 p.m., 100 S. Fourth Ave. $25 in advance at drinkblom.com/events & (if available) at the door. (734) 548–9729.

Aug. 14 & 15. Rising Omaha-based observational comic with a nerdy, off-kilter style delivers his thoughts on everything from vampires to being an uncle to the dangers of $35 hotel rooms. Opening act TBA. 7:15 p.m. (Fri. & Sat.) & 9:45 p.m. (Sat.), 212 S. Fourth Ave. $20 at aacomedy.com & (if available) at the door. (734) 996–9080.

5K, 10K, 1.2-mile, and half-mile open water races. Awards, medals for finishers, T-shirts, & more. Proceeds benefit North Star Reach, a camp for kids with life-threatening medical conditions. Races begin from 6:30 a.m.–9:30 a.m. (registration opens at 5:45 a.m.) Halfmoon Lake beach, 8725 Hankerd, Gregory. $180–$225 in advance at swimtothemoon.net; prices increase on race weekend. Michigan Recreation Passport (daily, $12 at the gate) required for each vehicle. (734) 585–7101.

Every Sun. Dancers of all ages and abilities invited for free-form dancing to a variety of recorded music, from EDM to classical and ambient to world music. Wear loose clothes, barefoot or stocking feet. 10:45 a.m.–1 p.m. A2 Yoga, 2030 Commerce. $20 (age 11 & under, free) cash or Venmo (@andjru) at the door only. tinyurl.com/ecstatic-dance-a2.

50+ local artisans, live music, food trucks, and more to celebrate 35 years of the Sunday Artisan Market, a juried market where artists and craftspeople show their work every Sunday, from April through the Sunday before Christmas. Work includes paintings, prints, ceramics, jewelry, woodcraft, drawings, candles, fabric & textile products, soap & personal care goods, repurposed items, and more. 11 a.m.–4 p.m., Kerrytown Farmers Market pavilion. Free admission. (734) 913-9622 (voicemail only), [email protected], sundayartisanmarket.org.

All invited to cheer on Pioneer High students as they play a friendly exhibition match to benefit patients at U-M’s pediatric critical care program. ECMO (Extracorporeal Membrane Oxygenation) is an advanced life-support machine that saved now 15-year-old Pioneer High soccer player Deedler’s life. Noon, Pioneer High School Hollway Field, 601 W. Stadium at Main. $5 cash at the gate.