[AndyK]

Can't access the article from work, but there are a number of artists who are known for changing the setlist night after night ... The Rolling Stones and Springsteen are probably the two biggest names. With Springsteen being the most well known exponent of it, not only does he change the written set list taped to the stage each night but he also regularly calls for a song that isn't on the set list mid-show (Band members have been known to say that once he's three songs into the show you might as well just tear up the set list as he'll play what he wants when he wantsto) Bruce even started taking spur of the moment requests from the audience during the last two tours. Other younger bands also mix the set up quite a bit The Gaslight Anthem are one that spring to mind right away.