Sam Smith’s debut album In The Lonely Hour is finally out in the U.S. and the singer has seemingly been everywhere to promote the record. His latest appearance was on The Late Show With David Letterman, where he delivered an absolutely stunning rendition of his cinematic “Stay With Me.” In fact, his performance was so powerful, that even Letterman struggled to find words when he was done, muttering things like, “wow” and “oh my god.” We know the feeling Dave. Watch a replay above.