Last month, Minnesota musician Andrew Richardson—guitarist for the Crush, and later sales manager for guitar pedal company ZVEX Effects—died at the age of 36. Now, a group of musicians including the Black Keys, Spoon, Jeff Tweedy, J Mascis, Cage the Elephant, Har Mar Superstar, Tera Melos, and Midlake have donated items to be auctioned for the benefit of Richardson's family.

The auction, which is now ongoing, will "raise money for Andy’s beautiful wife, Moe (Marisa) and 3 year old son Bronson, who must now carry on without him," according to the auction site. A Tumblr for the Andy Richardson Memorial Fund notes that "We hope that Andy’s profound impact on the local music scene will continue and take on new life through all of you, in the form of future creativity, collaboration and happiness."

Appropriately, the auction is heavy on devices used to create musical effects. J Mascis donated one of his custom-painted Double Box of Rock pedals, reports Billboard—while the Black Keys and Spoon donated signed albums and merch. A package donated by Jeff Tweedy includes Tweedy's personal—and autographed—Afterneath pedal, as well as an autographed Sukierae CD and backstage passes.

The auction will continue through Sunday.