I find that subway systems around the world are basically the same.
But only Spain has this guy. I saw him with his accordion in the car next to the one I was about to board, so I switched. It seems the other passengers didn't appreciate him as much as I did. I gave him what was left of my day's budget, which granted was only three euros, but he earned it.
How do you not love this guy? I've played this video over and over. It's like getting a shot of joy directly into my brain.