The Day the Orchestra Got Stuck - Ron Miller (1992) -- approx. 12 min.
There is a script for the conductor to follow to prepare the audience for the piece by getting them to sing a little (with the orchestra), and to get through the 'stuck' section (which also involves wind players squawking on their mouthpieces/reeds, brass players playing glissandi, etc. One orchestra member needs to sneeze loudly.
1-1-1-1 - 3-1-1- 2 perc -timp - str, plus conductor and audience.
Percussion includes snare drum and triangle.