If you’re not acquainted with George M. Cohan, you should be. Right after Independence Day (and during the incredible festival of song all around us in Cincinnati during the World Choir Games) is the perfect moment. Cohan, after all, was a self-described “Yankee Doodle Dandy” who cranked out more than 500 songsGeorge M! about his life. It’s on board the Showboat Majestic through July 29. $17-$18. 513-241-6550.