Carrie Underwood’s new single, “Good Girl,” has been certified gold for 500,000 digital downloads. The single was digitally released on Feb. 24 and reached gold status on April 4. “Good Girl” is the lead single from Underwood’s upcoming album, Blown Away, due May 1. In related news, Underwood will perform music from throughout her career for Live on Letterman, a live webcast series from the Ed Sullivan Theater in New York City on April 30 at 8 p.m. ET/PT.