Marie, I do confess that I like a boat!
There are so many formative songs, and some that take you back, some that evoke particular times, some that have stayed with you but have changed meaning.
If I could indulge myself with something a wee bit obscure that not many people besides myself and JKR listen to, I might mention Workshop of the Telescopes by Blue Oyster Cult.
By Silverfish Imperatrix, whose incorrupted eye
Sees through the charms of doctors and their wives
By Salamander, Drake, and the power that was Undine
Rise to claim Saturn, ring and sky
Which at first, when you hear it as a youngster, you think "what the hell is this man talking about? Is this some kind of weird sci-fi thing?"
By those who see with their eyes closed
They know me by my black telescope
And then, maybe years later, you realise that under the hard rock styling it's got the structure of a sea shanty, and it's about John Dee. We learned about the Spanish Armada in school, but we never learned the fun fact that Queen Elizabeth was advised by a man who spoke with spirits in a black mirror.
When my vision was oh, so cloudy
And I saw things through two eyes
And you arrive at the idea that, once you've gone through the stages of alchemical transformation - which might just mean you've gone through life and learned important lessons - you are equipped to see through the charms of respectable society.
Maybe, probably, I'm overthinking, but I have a weakness for puzzles that you worry away at for years only to keep finding new layers.