Yes! I found it, thanks Joe! I already checked the mento page and didn't find anything, except for a very interesting piece of information about the tune: "the well-used melody from "Dip and Fall Back", "What a Hard Time", and "Sweetie Charlie"(the third one is apparently a Jamaican folk song) with new lyrics". if this is true then King Radio borrowed the other piece's melody. Does anyone have a sound sample of "Sweetie Charlie" or the other songs to compare their melodies with "Matilda"?