Sept. 22–Oct. 2. Almost 2-week-long tech festival, with pitch competitions, a hackathon (two days of intensive coding), talks, panel discussions, a career fair, start-up demos, workshops, networking events, and more. Various times & locations. A mix of free and ticketed events. See full schedule at a2tech360.com.

This Philadelphia trio has championed 17th- and 18th-century chamber music since 2019 with a “fervor and delight that make early music seem current,” according to the Broad Street Review. Tonight, they present “The Muse’s Prism,” a mix of “greatest hits” from their first 7 years together—including consort music of William Lawes, sonatas by Buxtehude, Bertali, and Élisabeth Jacquet de La Guerre, unpublished sonatas taken directly from manuscripts, and the trio’s own arrangement of Bach’s beloved Schübler Chorales. With violinist Evan Few, viola da gambist Elena Kauffman, and keyboardist John Walthausen. Preceded at 6:45 p.m. by a talk. 7:30 p.m., St. Andrew’s Episcopal Church, 306 N. Division. $35 (seniors, $30; students, $10) in advance at academyofearlymusic.org & (if available) at the door. $5 increase after Oct. 2. (734) 228–4338. 

Art show and sale in a garden. Proceeds benefit the Ann Arbor Art Center’s public art program. Noon–5 p.m., 1227 Lutz. Free admission. [email protected]. 

Film screenings every day. Tickets $11.75 unless otherwise noted (children under 12, students, seniors age 65 & older, and U.S. veterans, $9.75; Marquee Arts members, $8) in advance online (recommended) & at the door. For updated schedule, see marquee-arts.org/calendar. 

Sept. 27: “The Lord of the Rings: The Two Towers” (Peter Jackson, 2002). Extended version of this fantasy sequel in which hobbit Frodo Baggins and his loyal companion Sam continue their quest, aided by the treacherous Gollum. 1:30 p.m.

Outdoor performance by this high-energy pop-folk duo from Minneapolis whose sound incorporates bluegrass, Americana, and indie-folk influences. 3 p.m., Knight Rd. (address provided upon registration). Preregistration required at knightroadhouseconcerts.org or email [email protected]. $30 suggested donation via Venmo or at the door.

(See preview) Pianist and U-M music professor Matthew Thompson accompanies U-M voice students and alumni singers in a program of traditional Korean songs that set a poem or text to music in a way that mirrors classic European art songs. Followed by a guest performance of Korean art songs by world-renowned Korean soprano Sumi Jo. The concert celebrates the first time that Korean song performance has been taught at U-M. 4 p.m., Hill Auditorium. Tickets $11–$25 in advance at smtd.umich.edu & at the door. (734) 764–0583.

Local pianist Kathryn Goodson is joined by a group of string musicians in Schubert’s 1819 “Trout Quintet,” which includes variations on his successful song “Die Forelle.” Also, Ralph Vaughan Williams’ lavish Piano Quintet in C Minor. With double bassist Gregg Emerson Powell, violist John Madison, violinist Sonia Lee, and cellist Thor Sigurdson. 4 p.m., 415 N. Fourth Ave. Tickets $32–$42 (students, $20–$30) in advance at kerrytownconcerthouse.com & at the door. (734) 769–2999.

Strolling appetizer and cocktail hour with live music TBA, followed by dinner served in the farm hoop house prepared by Zingerman’s Roadhouse chef Bob Bennett. 5–8 p.m., Growing Hope Urban Farm, 922 W. Michigan Ave., Ypsi. $150 in advance only at givebutter.com/chefs2026.