Billie Eilish and Finneas Crack Up as David Letterman Gets a Taste of Autotune

Billie Eilish‘s interview with David Letterman is too much fun to watch. The pair of young Billie Eilish and elderly David Letterman has so much energy and spark. They even go to a go-cart track and watching them have fun makes us smile too. You know, how singers are taunted if they use an…