Pert' Near Sandstone

After selling out First Ave this spring, Minnesota’s second-hottest bluegrass-branded string band is stepping up and out with its Pert Near Sandstone Backyard Bonfire. Sure, the “yard” is actually a parking lot and the only “fire” will be in the performances (hopefully), there’s still a familial summer vibe in the lineup of string pickers. Ukulele rockers Lucy Michelle & the Velvet Lapelles and vintage country harmonizers the Cactus Blossoms perform along with more bluegrassy bands the Pistol Whippin’ Party Penguins, Sans Souci Quartet and Farmhouse Band. (4 p.m. Sat., Cabooze Plaza. $20-$25.) There’s also an after-party inside led by the Boys N’ the Barrels (10:45 p.m., $5.) Chris Riemenschneider