Dierks explains to theboot.com why he didn't hold on to "Whiskey Lullaby":
"I turned down 'Whiskey Lullaby' (because) I never heard it as a duet. The guy who co-wrote that song is one of my good friends – Jon Randall. I thought, 'It's a great song, but it's pretty dang depressing.' I write plenty of songs like that. It was just not for me. That's why I end up writing most of my music ... every line has to be right for me because I'm singing these songs for the rest of my life. But, I love 'Whiskey Lullaby.' It's one of my favorite songs that Brad sings."
What if Dierks didn't pass up "Whiskey Lullaby"? Could it have been a hit song for him rather than Mr. Brad Paisley?