Watch Once Stars Steve Kazee and Cristin Milioti Charm David Letterman on The Late Show

Indie film-turned-hit musical Once took TV-land by storm on March 29 when the company brought their Broadway brand of Dublin pub music to The Late Show with David Letterman. The whole cast of actor-musicians kicked things off with a high-energy group number, then stepped back to support stars Steve Kazee and Cristin Milioti as they took center stage. The pair slowed things down with the bittersweet ballad “Falling Slowly,” the Academy Award-winning song from the original film. Click on below to see the wonderful stars of Once in the CBS spotlight.