If conclude the song in my head. It ends the loop and stops. If I don’t know the ending, I make up some grandiose ending so my brain thinks it’s over.

It works for that! Make up the most ridiculous, dramatic, crazy showtune style ending. Really ham it up. If that doesn’t work I’ll accept your surrender.

Fun fact, at least for me, if you don’t know the end of the earworm, make up a dramatic finale that ends it.

How times have not changed.