Brett Young performed his current single, “Lady,” as part of The Late Show With Stephen Colbert’s #PlayAtHome series. A number of artists—including Rhiannon Giddens, Lucinda Williams, Carlie Hanson and more—have taken part in the quarantined-inspired series, which, as its name implies, features artists performing at home. Brett co-penned “Lady” with Ross Copperman and Jon Nite…