Vintage musical Nun trio figurine, Japan

Vintage Christmas figurine plays music, but not sure of the name of the song. I recognise it as a very popular tune, and it plays long and strong. Figurine is of three little Nuns dressed in gold and cream habits. Measures 6 3/4" tall. Made of a paper mache material and has a Made in Japan sticker. Not perfect but is in good shape other than a few little nicks here and there. Key wound on the back.