to busk or not to busk

[Nemoguitt@aol.com]

perhaps im gettin too old...........this is the first time i have heard 
the 
word "busk"........would it be appropriate to wear a "will loop for food " 
tea-shirt whilst busking?........seriously, what is the origin of 
"busking"?.........also, the ken burns "JAZZ" series is playing on my 
public 
tele station, ten nites, close to 17-18 hours of very interesting well 
presented information, check it out, its nice...........michael