1) Singer-songwriter David Crosby, the veteran performer of The Byrds and Crosby, Stills & Nash fame, promises to draw on music from throughout his long career, from both solo albums and collaborative works. He is a two-time Rock and Roll Hall of Fame inductee for The Byrds and Crosby, Stills, & Nash. At 77, Crosby hasn’t lost his urge to create new music. His latest and seventh solo effort, Here If You Listen, was released last October. David Crosby & Friends’ Sky Trails Tour visits the Carnegie of Homestead Music Hall. 7:30 p.m. 510 E. 10th Ave., Munhall.
2) Machine Gun Kelly (MGK, née Richard Colson Baker), a rapper from Cleveland, has touched multiple facets of pop culture. MGK recorded “Bad Things,” which samples Fastball’s “Out of My Head,” with Camila Cabello in 2016. He was to open for Linkin Park on the band’s One More Light Tour, but the tour was canceled following the 2017 death of singer Chester Bennington. His acting credits include his portrayal of drummer Tommy Lee in The Dirt, a Netflix biopic of Mötley Crüe. He released “Hollywood Whore” as the first single off his upcoming Hotel Diablo album. Now he headlines Stage AE. Doors open 7 p.m. 400 North Shore Dr., North Shore. (CM)
3) Pittsburgh Opera is giving a free performance tonight as part of the Allegheny County Summer Concert Series. The 90-minute program features some of opera’s greatest hits sung by Ashley Fabian, Antonia Botti-Lodovico, Terrence Chin-Loy, and Dan Teadt. Accompanying them will be Karen Jeng on the piano. Bring a picnic blanket and enjoy an evening of classic musical theater in the sylvan surroundings of Hartwood Acres. 7:30 p.m. 200 Hartwood Acres, Hampton and Indiana townships.