Music Tonight: It's a slow night for touring acts, but a good one to catch a few local acts in a more laid-back-Tuesday-evening atmosphere. For example — Zach Mechlem of local "Alt-Western" group Mack West (pictured; Zach is second from the front) plays a free show at the Northside Tavern tonight with a pair of bandmates (officially, it's being billed as the Mack West Trio). Mack West's latest album, The Goodnight Trail, was one of the best local releases of 2011 and the best showcase yet of Mack West's unique, evocative spin on American Roots music. Mack West tunes have been used on History Channel's American Pickers, Discovery Channel's Auction Kings and in a commercial for AMC's The Man With No Name mini-series. Check out the title track from The Goodnight Trail below and read my review from when it was released here. Mechlem performs around 10 p.m. in the Tavern's front room.