I believe this took place at a Cubs game. Ozzy Osbourne singing “Take me out to the ball game.” The link is from the web site for the baltimore radio station 98 Rock.

http://www.98online.com/kml/osbournes_baseball.mp3

Here’s the version of the event as told by the Chicago Sun-Times

http://www.suntimes.com/output/mariotti/cst-spt-jay19.html

It makes me yearn for the days when Ozzy bit the heads of bats and urinated on national monuments.