I add West Side Story and Fiddler On the Roof to the above list.
Well, I'm not sure if the Ides of March played a part, but MFL was one of those that I think (certainly wasn't around then...) became a surprise hit. There was doubts about Julie Andrews, a young unknown actress, Rex Harrison "singing," the fact/rumor that R&H tried but could not make a musical out of Pygmalian, etc. I think I saw these opening night "doubts" re-enacted on a Lerner and Loewe special, so I'm not sure if they're 100% accurate.
"If there was a Mount Rushmore for Broadway scores, "West Side Story" would be front and center. It snaps, it crackles it pops! It surges with a roar, its energy and sheer life undiminished by the years" - NYPost reviewer Elisabeth Vincentelli
