My 7 yo dd is a musical fanatic. She really loves Seven Brides for Seven Brothers, Sound of Music (which has been her favorite since she was 4), Bedknobs and Broomsticks, On the Town, White Christmas, An American in Paris, State Fair, Oklahoma!, Carousel, Holiday Inn, A Connecticut Yankee In King Arthur's Court, and Anything Goes among many others. There's another one with Angela Landsbury, but I can't think of it now. Any older musical is going to be rated G.