Leonard Bernstein told this one on the Tonight show. He was rehearsing his orchestra for a coming performnce of Beethoven's 9th symphony. It was going to be an outdoors performance so that's where they were rehearsing. It seems that after thesir lunch break it was noticed that two of the "Bass" players had a bit too much to drink and they were disrupting the rehearsal, so he sent the two of them home. Then the wind picked up and the music began to go flying around the place, so they fastened the sheet music to the music stands with string.

All this stuff began to happen when they were at the bottom of the last movement. "So", said Bernstein, "There we were, in the bottom of the ninth, with the score tied, two out and the basses loaded."