That would be the corps march entitled 'We don't know who we are anymore'. It was favoured over it's close run counterpart 'We'll have you if no one else does', but the first was chosen as it was harder to march to.
daddle-la-da, daddle-la-da, daddle-laddle-laddle-laddle-da-da, der der der der da der der da der der der der, de der dedede der der, BROOM BROOM! der da der der da der der der der, de der dedede der daa, Fold Fold! De dede dadada dededede la la la SiZZLE SIZZLE late tra tetra tra tra tra Digity Dig woop dawoop woop woop WESTSI-EED! beep beep lade da dede ho hum Lickity-Stamp dooby dooby dooby do.