Watch John Perform "Longest Days" & Interview On The Late Show With David Letterman 4/27/2015

A-list stars appearing during Dave's final weeks before retiring from the Late Show. His first appearance with Dave was over 30 years ago, they bonded over being fellow Hoosiers, and John has been a regular guest over the years. Watch John's last performance and interview on late night TV with Dave.

"Longest Days"

John Mellencamp Talks Heart Attack, Smoking Cigarettes - David Letterman