POP/ROCK When Sandra Bernhard joined host Rosanne Cash for a show at a New York museum in January, it was songs and comedy without a net. (They'd met years ago on Letterman and reconnected via Twitter.) The setup will be different at MPR's live radio series "Wits." There is a referee, er, host, John Moe, and John Munson is the music wrangler. Wish them luck because Bernhard is a loose cannon (usually in a good way). Plus, musically, she can pull out anything from Prince to Britney to "Moon River," as well as her own tunes. Cash has her own cache of terrific originals and a wealth of country classics -- and she can hold her own when it comes to wits. The phone-in guest is comedian Eugene Mirman. (8 p.m. Fri., Fitzgerald Theater, $32.) Jon Bream
Not by coincidence, Slobberbone is playing next door to Tommy Stinson the night before it opens for him in Chicago. The North Texas country-rock band put out a pair of gritty, rowdy albums on New West Records (where former 'Mats manager Peter Jesperson now works) before splitting up in the mid-'00s. Frontman Brent Best went on to front the Drams but is putting his old band back together for a short Midwest stint while working on a solo album. (10 p.m. Fri., 7th Street Entry. $12-$15.) Chris Riemenschneider
He started out wanting to be the next Michael Jackson, and wound up as the guy who launched Justin Bieber. In between, Usher has proved to be a steady hitmaker ("Yeah," "U Remind Me," "OMG") and a sexy dancing fool onstage. Opening are Akon, a featured hook singer who also has scored his own hits, and Dev & the Cataracs, another young YouTube discovery. (7:30 p.m. Sat., Target Center, $29.50-$99.50.) Bream
Suburbs singer Chan Poling is taking his New Standards-proven revisionist skills and applying them to movie and TV music in the form of "Score!" The one-night-only show, a taping for the Current 89.3, will feature everything from European film pieces to movie classics by Mancini and Bacharach to some unmistakable pop-culture staples. His all-star support cast will include Jeremy Messersmith, Lucy Michelle, Janey Winterbauer, DeVon Gray and Terry Eason. (8 p.m. Sat., Fitzgerald Theater. $25.) Riemenschneider
As quirky as nearly everything else that Kimya Dawson has done, the former Mouldy Peaches partner and "Juno" soundtrack star is touring with a new all-star hip-hop trio called Hail Mary Mallon, featuring New York indie-rappers Aesop Rock and Rob Sonic with DJ Big Wiz. Named after the real-life Typhoid Mary, the trio will issue its debut album in June on Rhymesayers. Dawson is also about to release a new one titled "Thunder Thighs." (9 p.m. Sat., Triple Rock. Sold out.) Riemenschneider
More than its predecessors, Man Man's fourth album, "Life Fantastic," shows how much of a hoot the psychedelic Philadelphia band can be in concert. Frontman Honus Honus howls like Tom Waits and writes quirky, off-kilter tunes like Frank Zappa, and the rest of his band varies between a Gogol Bordello-like gypsy punk and "Nuggets"-brand garage rock. Fun fun! Semi-maniacal New York punk crooner Shilpa Ray & Her Happy Hookers open. (9 p.m. Mon., First Avenue. 18 & older. $15.) Riemenschneider
Canadian folk-rock champ Bruce Cockburn writes songs that are impassioned, intimate, gripping, political and often hook-filled, while his lead guitar skills are formidable. Another good singer/songwriter, Jenny Scheinman, seen previously in town with Bill Frisell and the Flatlanders (she's versatile!), opens the show and will play violin with Cockburn's band. (7:30 p.m. Mon., Cedar Cultural Center. Sold out.) Tom Surowicz
A Gipsy Kings concert is like a musical travelogue that visits France, Spain and any nation where flamenco music is practiced and appreciated. Of course, these adventurous singer/guitarists also incorporate elements of salsa, rumba, funk, pop, reggae and even electronica. (7 p.m. Tue., State Theatre, $53-$103.50.) Bream