I'll Know - Frank Loesser

This has always been my favorite song from Guys and Dolls.

Some of the changes are mine. The changes from the sheet music are shown above the staff in the first Head.

The Interlude and last Head are written in the Coda. The last Head is written out without first and second endings because there is a slight change in bar three of the melody and harmony the first time through.

I'll Know-Rev JE - Frank Loesser

Here are Robert Alda and Isabel Bigley singing it in the original production:
https://www.youtube.com/watch?v=H3rZ4iVL6DE

Cheers,
Jer