Carter Slade: Why'd you do it? Why'd you make the deal?
Johnny Blaze: I was a kid.
Carter Slade: What'd you get in return?
Johnny Blaze: Heartache.
Grisselle: Have mercy.
Ghost Rider: Sorry. All out of mercy.
Johnny Blaze: I'm fine. I feel like my skull is on fire, but I'm good.
Answer: "The West was build on Legends", by Christopher Young, from the movie's score.