What I loved is the dramatic irony.
Everyone who watches it already knows, note for note, the finished song being crafted. Only they don't. We get to watch the song's creators stumbling towards the light. We feel satisfaction as they approach the "true" sound.
As in a pantomime ("it's behind you!"), John says "attracts me like a cauliflower", and we all silently shout "like no other lover"