Last Thursday (May 14), Keith Urban played a secret show for health care workers from Vanderbilt University Medical Center about 40 miles outside of Nashville at the Stardust Drive-In in Watertown, Tenn.Capped at 120 cars and 200 people, the concert was Urban's way to pay back the extraordinary work staffers have done during the Covid-19 pandemic, but it may also provide a way forward for Urban and other artists to do concerts until it’s safe again for people to congregate without social distancing.Urban talked to Billboard about the experience.You have been playing many virtual shows since the pandemic started and now an actual show in front of an audience.