Surly Brewing has announced another installment of its Darkness Day, a one-day music festival that marks the annual release of its imperial stout, Darkness.

Darkness Day, like the beer itself, has been through many iterations over the nearly two decades that Surly has been releasing Darkness, including as a short-lived festival in Somerset, Wis.

The latest iteration is a free concert at the Minneapolis brewery's taproom. The Oct. 4 show gets underway at 11 a.m. with a packed lineup of metal and punk music.

It's headlined by melodic hardcore stalwarts Strung Out, which will play its 1996 album, Suburban Teenage Wasteland Blues, in its entirety, along with "other favorites."

They'll be joined by Texas punk rockers The Marked Men, who sold out Cloudland Theater last time they performed in

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