By request. It's a little bit intimidating to do this on the guitar. Makes it too easy to compare to the original. I started out thinking it would be funny to do this on the accordion, but after working on it, I started to want to actually do it right and honor the original. So, I'm really giving it my best here.
Then transferred the notes to my piano. Most of the song is two notes moving up and down with the bass note moving chromatically, usually an octave and a third apart. To fit it on the keyboard, I shortened the interval to just a third apart. On the guitar the G string rings most of the time, but I left that out.