Here is some Kazoo trivia. Lee Kerslake played the kazoo on Uriah Heep's "The Magician's Birthday". Being a fantastic drummer and kazooist he went on to record "Blizzard Of Ozz" and "Diary Of A Madman". He was not given credit for drumming on either album. The kazoo is a misunderstood instrument much like the cowbell.
Unlike Rapping the kazoo still requires the person to have a small amount of talent. The player must at least be able to hum a tune.