Photo by Steve Truesdell

Wilco, the long-running rock band led by Jeff Tweedy of Uncle Tupelo, announced on Monday that it will be performing a surprise acoustic set at) on Wednesday, August 17.The show itself is free, but those who wish to attend must first pre-order the band's latest record,, in person at Euclid in order to gain access. The first 150 people to pre-order the album will see the show, which will take place at 3 p.m. on Wednesday.Euclid Records, which has been in business for nearly 35 years, was actually Tweedy's employer during his time with Uncle Tupelo in the late '80s. This Wednesday's show is the first in a series of "I Heard Schmilco" events the group is planning — on its Facebook page, Wilco is encouraging its fans to "send a request to your favorite record store and ask if they'll host."Wilco will also perform at Fox Theatre on Wednesday night. Some tickets are still available, though the show is expected to sell out.Stream "Locator" from the new album below: