i heard tubas, seriously! maybe it was sousafones or maybe it was the trumpets playing real low. and it said dci on the tapes from madison, wisconsin. Madison Scouts were playing some kind of Bad to the Bone rendition and then went into some brassy big band chart, then some sort of classical music, which was pretty boring. dont know about the rest of the corps, but im sure madison had some tubas or sousafones