The National [ tickets ] and Menomena [ tickets ] are scheduled to perform at "Co-ops Rock," a Sept. 19 benefit concert at The Moore Theatre in Seattle, WA.

The show, which is being presented by the National Cooperative Grocers Association (a business services cooperative for more than 100 consumer-owned food co-ops located throughout the US), also will feature videos and presentations from organic farmers impacted by floods over the past year.

Proceeds from this first annual event will go to the Northcountry Cooperative Development Fund, which provides aid to Midwest farmers effected by this year's flooding, according to a press release.