Polyrhythmics, Kalu & the Electric Joint at the Mohawk indoor. The sprawling jams of Seattle groove collective Polyrhythmics will make you move, but hometown opener Kalu & the Electric Joint, the new project from Nigerian expat Kalu James, is also a big draw. The group’s latest release, ‘Time Undone,” simmers a slow burning dish of love and longing into a murky stew of muscular psychedelics, gut-bucket blues riffs and rootsy soul. $12-$15. Doors at 9 p.m. Saturday. 912 Red River St. mohawkaustin.com. — Deborah Sengupta Stith
“Bella and the Beast.” This Austin Symphony Orchestra concert features Bulgarian violinist Bella Hristova. Known for her passionate and powerful performances, Hristova makes her Austin debut with Igor Stravinsky’s beastly “Violin Concerto in D Major.” The evening will open with Rossini’s “Overture to Semiramide” and include other works, such as the “Brandenburg Concerto No. 3” by J.S. Bach. 8 p.m. Saturday. $19-$75. The Long Center, 701 W. Riverside Drive. 512-476, 6064, thelongcenter.org.
Adelante New Year Barre & Shopping Event. Make 2018 your healthiest year yet with a morning of wellness at Adelante Boutique that includes a 30-minute barre workout by MOD Fitness, fresh juices from Jugo Austin and gifts from Outdoor Voices. Plus, you can shop for a new yoga mat from Wild Arrow and get a 30-second antioxidant scan from NuSkin/Pharmanex while snacking on Kind Bars. 9:30 a.m. to noon Saturday. Free. 1206 W. 38th St. Suite 4104. eventbrite.com/e/adelante-new-year-barre-shopping-event-tickets-41526872995.
Wangechi Mutu at the Contemporary Austin. Want to learn more about the artist whose work has been on display at the Jones Center and Laguna Gloria? The Contemporary Austin is hosting a conversation between her; Heather Pesanti, senior curator at the Contemporary Austin; and Kanitra Fletcher, curatorial assistant for modern and contemporary art at the Museum of Fine Arts in Houston, where Mutu’s art is also on view. She’ll talk about her artistic process, inspiration and ongoing interest in representations of the black female form and labor. 1 p.m. Saturday. Free-$5. 700 Congress Ave. thecontemporaryaustin.org.
Save the Narwhal. This tasting at Pinthouse Pizza isn’t just about drinking good beer — it’s also about giving back to a good cause. Pinthouse Pizza will donate $1 for every 12 oz. of Sierra Nevada’s Narwhal Imperial Stout purchased to the World Wildlife Fund, in an effort to help save the narwhal, a toothed whale, from climate change-related issues endangering its habitat. The brewpub will have a four-year vertical, from 2013 to 2016, of the malt-forward monster on tap, as well as other Sierra Nevada brews. 11 a.m. Saturday. Free. Pinthouse Pizza, 4729 Burnet Road. facebook.com/events/410122722756579/.