This is kind of a cheat. There's a long tradition in jazz where musicians will take the changes of one song and write a new melody over it and call it something else. For example "Oleo," by Miles Davis, which is based on Rhythm changes (the changes in the Gershwin classic, "I Got Rhythm"). I play bass in a Jazz/Blues duo called PR, with a fine guitarist named Richard Baudrand. The tune this is based on is an old warhorse of a standard and we'd talked about writing a new melody (and also words in this case) to kind of freshen it up. I don't know if this fits the bill, but it's FAWM so what the hell.
You know me,
Of course you know me pretty good by now
You should, and how.
You know I'm not the kind of person prone to gushing or displays (of affection)
So don't be
so don't be shaken when I tell you how
Don't have a cow
To know I'm feeling sorta kinda slightly happy in a way ( and on reflection)
I'm really, word-wise, at a loss.
I'm not sure how this comes across.
Do you see me as a bumbling fool
or a fool in love?
To have you here spins my whole world around and round.
Those Autumn leaves are falling up instead of down.