Is it illegal for me to hear any other person's song? Can we co-ordinate? I think with the 8 billion of us we have around we might actually get close to covering the full library of human songs as long as none of us repeats. In that case then I don't really care which one, I'm happy to be just assigned one to make none of us doubles up. Another question would be how well the human birth rate can keep up with number of new songs people come up with. If we can average out the rate of growth can we just assign any given new song to a registry so we don't exceed that average and that mete out a new entry from the backlog in the registry to each person as they're born? Maybe if we can assign a song to each person that has ever lived or at least who's life was recorded we can add some resilience to account for unexpected low birth yields or something. I'm assuming a song is still "legal" after its person has died. If not it'll be a bit more complicated.
Jethro Tull - Thick as a Brick. I've always loved this song, it has a mix of different styles, from flute-forward chill sections to more classic rock sounding parts.
Oh and it's over 43 minutes long. Before anyone says "oh but there's part 1 and part 2", this was a limitation of vinyl and not the artistic intent behind the piece. It's one song, fight me.
I think if I had only one song, I'd pretty quickly come to hate it. Although props to the commenter who said baby shark. Torture your enemies and become loved by children.
The intense longing and driving song that is about becoming who you are hits extra hard when you know the singer has now come out as trans and is singing about her true self.