An orchestra is playing Beethoven's 9th Symphony. There is a passage in the middle when, for about 20 minutes, the bass violinists have nothing to do.So they decide to slip out to a bar and drink a few beers. After a while one says, ""Hey, we better get going.""But another says, ""No, wait. I tied several pages of the conductor's sheet music together, so we'll have a couple of extra minutes while he sorts it out.""So they stay for another round. Finally when they go staggering back to their plac…