Also, Fiddler on the Roof and Les Mis!
As I recall, The Music Man was the first musical I saw live when I was in high school.
Now that I know what I know about how to choose a person for a healthy relationship, I would caution Marian, the librarian, to run, run as fast as you can from Prof. Harold Hill! Look at his character, don't let the stars get in your eyes! But I've become jaded over the years, read too many books about this relationship business. Ah, yes, romance on stage, in the movies.....
Someone mentioned Meet Me in St. Louis. That will forever be one of my most favorite movies. Loved the book, too!
How to choose. I love Sound of Music, Seven Brides for Seven Brothers, CATS, Carousel, Joseph, & Guys & Dolls. I still haven't seen Jersey Boys, Mamma Mia or Memphis yet. Only musical I haven't enjoyed was Music Man. (did not like the professor...too much of a "used car saleman" to me). :)