Tonight is the last show for late night's king, David Letterman. An article from Wall Street Journal (May 7, 2015) on David Letterman's love of Americana and roots rock music through the years.
"Americana incorporates 'elements of various American roots music styles,' according to the Americana Music Association, including country, roots rock, folk, bluegrass, R + B and blues."
Audio Rumble celebrates the last Letterman show with the appearance of Tommy Conwell and the Young Rumblers performing "If We Never Meet Again" on January 4, 1989. Thanks, Dave.