Crazy Doberman are an Indiana free-improvisation and jazz collective created in 2016 as an offshoot of the group Doberman, started three years before. Core members, including Tim Gick and Doberman cofounder Drew Davis, appear on many recordings, but Crazy Doberman’s lineup is loose—it varies on each of the band’s 40-plus albums and has featured dozens of musicians, among them Wolf Eyes’ John Olson and percussionist Tyler Damon.