pip pop pickerty pop pickey pip pop pippy, pip pop pickerty … etc
Any one old enough to remember an old quiz show on UK telly called "face the music"? It was quite a high brow classical music thing. They had this round where the quiz master, an accomplished pianist, had this dummy keyboard thing that was like a full set of piano keys but no mechanism or strings etc. It just made a kind of clacherty noise. Each week the quiz master would play a famous piano piece on it and the contestants had to guess what it was.