Kane Brown + Katelyn Brown have just agreed to terms for a Lifetime Christmas movie that will be based on their smash hit duet, "Thank God." What Christmas Movie Is Based on Kane Brown's "Thank God"? When Does Kane + Katelyn Brown's Christmas Movie Drop? When Did Kane Brown Meet Katelyn Brown? 20 Kane Brown Songs Every Fan Has Memorized Kane Brown has built himself quite the career: He's come a long way since 2015, when he released his first single, "Used to Love You Sober."