I was onstage singing with Luke Bryan, and he started singing a song that we hadn't rehearsed. Both Luke and myself just winged it.
I was about to walk on stage at the Kansas Speedway - I was playing a NASCAR race - and I said to Scooter Carusoe, who was standing side stage, 'I want to write a song called 'Wanna Be That Song.' Then I put my earphones back in and walked right out on stage.
