Tim McGraw is going to be playing a rare free show on a lake in Minnesota, but there’s a catch.  You have to own a boat, or know someone who has one to get to the show.

The concert will be played at Lake Minnetonka, outside of Minneapolis and in order to see the show, for free you have to take a boat to the private shore where it will be held.  Since speakers will be placed near the water, all boaters will be able to hear the performance for FREE.

The show is a private charity performance, raising money for Folds of Honor, which provides scholarships to families of military personal disabled or killed in combat, and Helping Paws, which places therapy dogs with veterans suffering from PTSD.