English singer-songwriter Flo Morrissey and Richmond-based musician Matthew E. White released a collaborative covers album, Gentlewoman, Ruby Man, last month, and last night they were on The Late Show With Stephen Colbert to perform their cover “Grease,” the Grease movie theme song that was written by Bee Gee Barry Gibb and sung by Frankie Valli. They were joined by house band Jon Batiste And Stay Human. Watch below.

Gentlewoman, Ruby Man is out now via Glassnote.