SF's subway, BART, has some underground stations in which a variety of characters gather.
One day an Asian gentleman was playing his stringed instrument: it has 2 or 3 strings, looks like someone took a gourd and stuck a stick in it, and it is played with a violin type bow.
Whenever I see one of these guys I am always tempted to give him a couple of bucks and say "buy yourself a few more strings". I mean, how can you play a decent melody with 2 or 3 strings? (But I've heard rumor that one of U2's early mega-hits was done where the guitar player had just that many).
At any rate, as I passed this guy who was playing away I realized that the song he was playing "O Suzanna", and not some ancient tune from the past....