"Who Took The Drum Out of Drum Corps?"
"Who Took The Drum Out of Drum Corps?" by Ken Mazur (from RAMD Virtual Symposium 1997: Crossroads). See http://www.rudimentaldrumming.com/tips.html for Ken's lengthy (very) exposition of a lot of fascinating drum corps history.
The following clips are metaphors for what's happened to drum corps. We've gone from this (acoustic drums):
to this (not acoustic drums, not drums but electronic pick-ups attached to a drum head):