Talk about smashing boundaries.  Here is video of that de-trendy trio playing backup music to the Isaac Mizrahi fashion show in New York’s fashion week.  The tune is apparently the new Dave King-penned “Really Good Attitude”  (listen for the hand claps.)  See if you can see any effect on the models’ expressions when the improvisation really goes off the rails.

Here is Ethen Iverson’s account of the event from his great blog Do The Math.