Old Granny Teapot

Not sure about this one, I tried researching and I found Shawnee Granny Ann Teapot and there is also the Tony Wood Granny which look very similar. The bottom of this only says "Made in England" and has a small marking, some kind of signature. Well I searched for quite some time and didn't find any that have the attached music box, when it is lifted to pour it plays music. Not sure what song is being played. If you have anymore info on this item I'd like to hear it. Thanks.