He might not be a numerologist, but Quando Rondo can rap about Rollin 60’s Crips, Glock 21s and Psalm 23 in the same song. And while the first two paint a picture of violence, the last one (“The Lord is my shepherd; I shall not want … Yea, though I walk through the valley of the shadow of death, I will fear no evil.”) is perhaps most instructive. In his brief career, the 20-year-old Savannah, Ga. native has rapped plenty of melancholy melodies about street life with a heart hardened by time in the projects and penitentiaries. Sept. 14 at 9 p.m. at Milkboy Arthouse. $20-$25.
K A G
When she’s not leading the charge as the vocalist for D.C.’s preeminent punks Priests, Katie Alice Greer records and performs as K A G. The solo project is home for Greer’s more unconventional experiments, as she mixes her searing vocals with electronic beats, sample loops and noise of all kinds. Whether she’s singing over skeletal club music or turning the Dixie Chicks’ 1999 album “Fly” into a DIY noise-pop record, Greer gets weird in her own way. As press materials describe one such experiment, “Think Madonna in a Keith Haring dress on a bed in the middle of a warehouse club.” Sept. 17 at 7:30 p.m. (doors) at the Black Cat . $10.
Last year’s winner of the BBC’s influential “Sound of” poll (past winners include Adele, Ellie Goulding and Haim), Sigrid is the latest pop star to master the kind of pristine, synthesizer pop that Scandinavians have been churning out since ABBA. But for the 23-year-old Norwegian singer-songwriter, a back-to-basics authenticity is key. That’s true on one of her best singles, “Don’t Kill My Vibe,” which reveals more grit than you might expect from a gentle songbird. Though the song was born from a difficult writing session with an older, dismissive songwriter, it’s general enough to serve as an empowerment anthem for youth in revolt everywhere. Sept. 17 at 7 p.m. (doors) at 9:30 Club. Sold out.
For Brent Cobb, music is a family business: His cousin is Dave Cobb, the Nashville producer who has helmed some of the decade’s best country albums, by such artists as Sturgill Simpson, Chris Stapleton and Jason Isbell. The elder Cobb has also produced Brent’s albums, which are full of songs that bring soul and wit to down-home life. Take “Diggin’ Holes,” where Cobb connects the lyrical dots between digging holes in relationships, hitting rock bottom and leaving town to earthbound jobs like digging for coal, drilling for oil, working on the railroad and toiling in a graveyard. Sept. 18 at 8 p.m. at Rock and Roll Hotel. $18.