My band teacher is a HUGE Star Wars fan. For one of our concerts, we ended off with the Star Wars theme song. Out of nowhere, he pulled out a red lightsaber and started conducting us with it. THEN our school's theatre teacher came up and they started battling on stage while we were all playing (trying to still salvage the piece as much as we could because of our laughter) My band teacher won the battle and my theatre teacher pretended to fall off the stage. This is how concerts at my school go.