It was finally unveiled Monday when he pitched an inning in a 6-2 loss to the Miami Marlins at Citizens Bank Park.
The tune is Alice in Chains' "Man in the Box."
"I just like how it says, 'Won't you come and save me?'" Papelbon said Wednesday. "But I guess in a save situation, it doesn't really work too well, you know? I'm actually not really big on the whole thing. It's not for me. I don't even hear it half the time."
Papelbon had Dropkick Murphy's "Shipping Up to Boston" when he pitched for the Red Sox. That song obviously would not fly in Philadelphia.
"We'll see how it goes," Papelbon said.