Mystery Monday pays tribute to Sarah Elizabeth Campbell. 1993 photo by Kevin Virobik-Adams / American-Statesman

Mystery Monday third anniversary at El Mercado. A successor to singer-songwriter Sarah Elizabeth Campbell’s long-running “Bummer Night” series, Mystery Monday started up in November 2012 with Campbell and Christine Albert as co-hosts. Campbell died in December 2013, but Albert has kept the event rolling, gradually growing its audience until El Mercado added a great new stage and sound system to its back room. They’ll celebrate with a special program that celebrates Campbell’s life and music, featuring Albert and co-hosts David Carroll and Bill Kirchen plus many special guests, including Bobby Kallus, Kym Warner, Chris Gage, Jimmy LaFave, Marcia Ball, Rich Brotherton, Judy Painter and Rose Kimball. Free. 7:30 p.m. 1302 S. First St.

Also: Sold-out shows hit venues both big, ACL Live with former Soundgarden singer Chris Cornell, and small, the Stubb’s indoor stage with British rockers the Struts and Andrew Watt. … Catch Philadelphia’s latest indie wave on the Mohawk’s outdoor stage with the Menzingers, Mewithoutyou and Restorations plus Baltimore band Pianos Become the Teeth. … Indie-rock singer-songwriter Fernando has been a mainstay of the Portland, Ore., scene for two decades, and he got significant help from former R.E.M. guitarist Peter Buck on his engaging new album “Leave Your Radio On.” Catch him at Hole in the Wall. … It’s a double CD-release show for Gold Magnolias and Jon Foose at One-2-One Bar.