Technically speaking, The Prince of Darkness, Ozzy Osbourne and his wife, Sharon, did sing "Take Me Out to the Ball Game" during the seventh-inning stretch at Wrigley Field. Technically speaking. If you examine it more closely, it sounds like he was casting a spell or chanting some religious passages the the tune of the old baseball classic. Check this 2003 blast from the past.
WATCH: Check out the priceless Cubs dugout reaction to Ozzy singing Take We Out To The Ballgame! I think he got 9 words correct.