Bill Callahan

“Everyone’s allowed a past they don’t care to mention,” sings Bill Callahan on “America!”,

the distortion-driven and overtly political centerpiece of his most recent album, Apocalypse. In the context of the song, the line is likely a reference to the bloodier moments in our country’s history, but it also aptly describes the singer-songwriter’s career. Callahan used to record as Smog, releasing dissonant lo-fi cassette recordings that grew in fidelity and complexity as he signed to Drag City and eventually released his first album under his own name in 2007. On 2009’s mellow and inviting Sometimes I Wish We Were An Eagle, that past sound was hard to find, but it partially returns on Apocalypse, a rawer album that isn’t afraid to compromise the smoothness of its predecessor. Callahan may not care to mention his past, but perhaps he should: it continues to inform his esoteric, beautifully fractured songwriting. With Michael Chapman. ANDREW GOSPE

Wed., June 22, 8 p.m., 2011