Happiest,
The one you’re referring to, I believe, is the last track on Avraham Fried’s first album, “No Jew Will Be Left Behind”. It’s also the final track on Mona Rosenblum’s “Di Groissa Chasunah”. MBD sang it as part of the “Emunah and Bitochon” medley in “Once Upon a Nigun”, and for a simple but stunningly beautiful instrumental version, the final track on Andy Statman and David Grisman’s “New Shabbos Waltz” is a must listen.
Moshe Laufer also performed it instrumentally on “Mitoch Haneshamah” (track 7) as part of an Ani Ma’min medley, and that’s also very nice.