In Season 5 Episode 3 of The Lucy Show, “Lucy the Bean Queen” (1966), Ed Begley (Sr.) sings a jingle about a fictitious brand of beans. You can listen to it at the 6:15 mark, here: https://www.youtube.com/watch?v=_36_dTq_vJQ
The same tune is used in the animated film Sooper Goop (1976) as a jingle for a fictitious brand of cereal. You can hear it at the 1:10 mark, here (make sure that Dailymotion is not muted): https://www.dailymotion.com/video/xem0tb
Can someone please identify this tune? It sounds like some kind of children’s song/nursery rhyme, but I can’t quite place it.