Diana Ross
She's the queen of Motown, the voice behind "Where Did Our Love Go" and all those Supremes hits as well as such solo smashes as "I'm Coming Out" and "Ain't No Mountain High Enough." She promises new tunes from last year's "Thank You," her first album of new material in 22 years. Ms. Ross, as she prefers to be called, is a diva's diva — the gowns, the hair, the presence, the songs, the messages, the emotions. She will reach out and touch her fans. She's bringing one of her daughters, singer Rhonda, but not Tracee Ellis Ross of "Black-ish." A cappella group Naturally 7 opens. (7 p.m. Sat. Minnesota State Fair grandstand, $34-$60, etix.com)
JON BREAM
Laughing Waters Bluegrass Festival
After this 23rd annual pickathon's ringleader Alan Jesperson of the Middle Spunk Creek Boys passed away in December, the Minnesota bluegrass scene rallied to keep his labor of Labor Day love alive. Longtime favorites King Wilkie's Dream and the High 48s will top off the lineup, preceded by harmonious coed quintet No Man's String Band and younger old-timey players LaPlant Road and Steam Machine. It's as cozy a setting as music festivals get, with Sea Salt and other food and beverage options rolled in. (1-7 p.m. Mon., Minnehaha Falls Park, Mpls., free, mscb.com)
CHRIS RIEMENSCHNEIDER
'Star Trek II: The Wrath of Khan'
Ricardo Montalban was at his sexiest, nastiest and mullet-iest as the title character in the best "Star Trek" movie, which is back in theaters to celebrate its 40th anniversary. Khan is a nemesis who dates all the way back to the '60s TV show but who hasn't stopped thirsting to defeat Adm. James T. Kirk (William Shatner) and pals. (Showtimes, prices and theaters vary, Sept. 4, 5 and 8, fathomevents.com.)