Katy recorded the vocals for the demo, mixing her pop sensibilities with a little bit of country twang. She sings in the chorus: "I'm a bullet and I'm headed straight for your heart / Be careful what you start / I'm a bullet and I'm headed straight for your heart / It's gonna leave a mark."
Katy is a mega pop star in her own right, but she's also an accomplished songwriter. Not only has she penned this tune for Jessie James, but she's also written songs for Selena Gomez, Kelly Clarkson and Ashley Tisdale.
Listen to Katy singing 'Bullet' below and let us know your thoughts in the comments. Do you think the pop singer should release her own country album one day?
Listen to Katy Perry, 'Bullet'