This clip is a rough rendition of Hark the Herald Angels Sing, the familiar Christmas carol sung by groups visiting homes during the festive season. The humour comes not from the song itself but from the performance, which sounds untrained, enthusiastic and out of tune. Shared online as a short meme and prank sound, it works because almost everyone recognises both the melody and the awkwardness of a doorstep carol that does not go to plan. Creators keep returning to it at Christmas because the contrast between a beloved seasonal song and a stinky performance is recognisable in comedy edits.