To a western ear the songs seem to go on forever but if you listen closely you can recognize a sort of improvised melody weaving through the song. At least I can when he plays.
Most of the street players aren't much good, but he's the exception. On a sunny day it's a pleasure to stop briefly and "give a listen." (By the way, this is literally how you say "Can I listen" in Chinese: "Please give me a listen.")
He's there every Saturday and Sunday morning from 10:00 to 1:00. I place a few bills in his can. He's worth it!
Click on the picture and have a listen.
A painter paints pictures on canvas. But musicians paint their pictures on silence. -Leopold Stokowski