From SNY’s “Children’s Letters To Keith Hernandez” (link swiped from Always Amazin‘)

Q: If you were playing today, what music would you like to be played if you approached the batter’s box?
-Manny, North Bergen, N.J.

A: I don’t know what song I would like if I were playing today. When I played with St. Louis my song was Jethro Tull’s, “Thick As A Brick” which Ernie Hayes (the Cardinals’ organist and friend, butchered to death!). He even asked me after two weeks to change my song. I told him to go back to his organ and practice.