While I'm certain that 1776 comes first to mind for most people, instead we're going to start with another. It's a show that opened in October, 1964, called Ben Franklin in Paris. And it had an impressive lead -- Robert Preston, in his first musical since The Music Man. It had music and lyrics by a fellow named Sidney Michaels and also starred Ulla Sallert. The show didn't have a long run, though did play for 215 performances, which is half a year.
I'm not bowled over by the score, but it does have a few nice things in it. And happily, my favorite song even has video of it when the cast appeared on The Ed Sullivan Show and performed the song and the scene that leads into it. This is "Half the Battle."
The other song, "Look for Small Pleasures," is quite nice, in a small, charming way. In fact, it even had a bit of life outside the show and was recorded by several people, with moderate success.