Here's 20 seconds of a band that was playing on Wenceslas Square yesterday. I love buskers.
I do too. What's a busker?
Buskers are street performers who just show up and perform in public, usually with a hat or can or instrument case open to receive tips from people. There are lots of them here, on Charles Bridge and in the squares, but I've also seen lots of them in New York, especially in Central Park. They're often quite good. I think sometimes music students go there just to play together for a while and get some extra money.