The Grand Ole Opry posted a video featuring footage of Post Malone's debut last August, when he celebrated the release of his debut country album, "F-1 Trillion". It's actually a pretty touching, emotional video . . . where he shares his genuine appreciation to both the Opry and to all the other country stars who were there to support him. The montage also features Brad Paisley, Lainey Wilson, Vince Gill, John Michael Montgomery, and The War + Treaty.