Evolution of John Cougar to John Mellencamp

John Mellencamp knows American music. The singer-songwriter has spent a career perfecting it. Changing his name to John Cougar, early on, he made his mark with his unique brand of heartland rock in the late '70s, taking flight as John Cougar Mellencamp in the early '80s with a string of instant classics that endure decades later. Making poetry out of the everyday, he returned to the name John Mellencamp in the '90s, never losing his ability capture a moment with a riff and a turn of phrase. Trace the evolution of John (Cougar) Mellencamp.