What song does Tom Cruise sing in rock of ages?

Tom Cruise does not sing in the movie *Rock of Ages*. He plays the character of Stacee Jaxx, a famous rock star, but the singing voice you hear for Stacee Jaxx is provided by a professional singer named Constantine Maroulis. Constantine Maroulis was a contestant on the fourth season of *American Idol* and is known for his powerful rock voice.