Lotus

9 p.m. • Mill City Nights • 18-plus • $22

With its latest album, longtime jamtronica band Lotus stripped down and spread its predominantly instrumental wings. Following 2013's funkier, heavily electronic "Build" and the hip-hop-informed "Monks," the Philly-based laser gazers went back to basics with last year's more organic "Gilded Age." Songwriting twin bros Jesse and Luke Miller crafted an expansive, sunset dance party soundtrack invoking more traditional jam-rock. The spacey quintet also released a remastered and live recording of its debut album "Nomad" last year. Because the band name Turbo Suit doesn't have rape-y connotations, the opener formerly known as Cosby Sweater changed its name this year. Michael Rietmulder

Gov't Mule

8 p.m. • State Theatre • $39-$44

With the Allman Brothers calling it quits last fall, Warren Haynes can concentrate on his other band, Gov't Mule. He's got a special treat for the jam band's 20th anniversary tour — jazz guitar star John Scofield will be sitting in. They collaborated on a new CD, "Sco-Mule," which actually was recorded at a 1999 concert in Atlanta, then shelved because of the death of Mule bassist Allen Woody shortly after the gigs. Scofield, who mixes soul, fusion and post-bop styles, makes a compelling contrast to Haynes' bluesier style. If the concert is half as exciting as the live album, fans will be in for a big treat. Jon Bream