There's a great song on Eric Church's The Outsiders album called "Dark Side."

He wrote it with Travis Meadows and Jeremy Spillman. It's one of those haunting ballads we can all relate to: how you have probably done some stuff you're not proud of, so you try to keep that a secret.

Well, guess who else can relate to that? Actor Chris Pratt, the star of Jurassic World.

Pratt told GQ magazine one of the ways he got into character for this new movie was by listening to that Church song over and over. His mantra before his scenes was, "Flow core, no TC, volume up point five, Eric Church.”

The Church part of the mantra reminded Pratt about his own dark side, with lyrics like, "I got a wife and got a son that don't know half the stuff I've done/And I pray that's the way it stays/And that's why my dark side don't ever see the light of day."

Fun fact about Pratt: There always seems to be an element of music in his standout roles. Especially on TV. His Parks and Recreation shoeshine character Andy Dwyer was a singer on the side, and when he was in The O.C., he played Che, who liked to play the guitar naked for Summer (Rachel Bilson).