From EPSN's Page 3:
"We've talked to the music folks for all 30 major-league teams, and we've got a list of the at-bat music for every team in the big leagues. For some players, we've even got the "story behind the story" about how the song was chosen. We even got some pitchers to tell use what their entrance tune is when they come in from the 'pen."
It's part of a summer-long series on sports and music.