The Forecastle Festival has confirmed both an official kickoff party and a special after show. On Thursday, indie duo Dean & Britta and electronic act Purity Ring will perform at the festival’s official kick off event. Presented by Consequence of Sound, the event will take place at Louisville, KY’s Club 116 on July 12.

In addition, on Saturday, July 14, Preservation Hall Jazz Band will play an official Forecastle after show. Nodding to their New Orleans roots, the group will perform on the historic Belle of Louisville steamboat. Members of My Morning Jacket—who will curate Forecastle—will sit in with the group aboard the Belle of Louisville. From every ticket purchased for the after-party on the Belle of Louisville, a portion will be donated to the Center for Women and Families, a Louisville non-profit dedicated to helping victims of intimate partner abuse or sexual violence.

Details on Friday’s after-party on the Belle, presented by Bell’s Brewery, as well as an additional Saturday after-party to be hosted at Club 116 will be announced in the coming weeks.

Forecastle will return to Louisville from July 13-15. My Morning Jacket, Wilco, Bassnectar, Andrew Bird, Girl Talk, Atmosphere, Neko Case, Sleigh Bells, A-Trak and Galactic are among the acts slated to appear.