Uncle Kracker, the former Kid Rock collaborator who scored a No. 1 country duet with Kenny Chesney on "When the Sun Goes Down," will perform at the CMA Music Festival on June 10 in Nashville. "I have been hearing about this event for a while, and I think the concept is hot," he said. "It is an honor to be performing with all of these hot country acts, and I am looking forward to having people join Kracker world." Uncle Kracker's new album, 72 and Sunny, is due June 29. He joins Chesney's tour on June 3.