Fab forum | The Beatles Bible

Funny Paper said
This interesting description of Paul and John co-writing BFTBOMK focuses on the images and lyrics, but says nothing about the chords.  One wonders where and how the two of them came up with a melody and chord sequence completely unlike any other song they'd done. 

BFTBOMK has the feel of that kind of circus music/monster movie music/Slavic music, I'm not sure what genre one could call it, but it definitely has a palpably recognizable feel as some singular genre in its own right.  I suspect that John had more input in this aspect of the song, ...