I took the advise of the guy that wrote the first reply.I took the class outside, passed around a few doobies and we all lay down and listened to Shine on. I explained it was impossible to sum up PF or even one of their songs in 10 mins, so I let them discover for them selves, the same way I did many years ago. It went off perfectly....and Just as the lyrics started, a massive flock of birds flew over us and danced in the sky for the whole song...It was like it was all planned out...Magical. The only downfall was that I had used the Echoes CD as that was the clearest and best version that I own, So as we were all spinning out, I forgot to turn the cd off and of course the next song on the cd is Time, so suddenly all the alarm clocks started going off and scared the s**t out of everyone.