Trying to Find out School Show (big cast, mandolin & glockenspiel, girl lead)

oscarpartazz23 said: "Hi!! Trying to figure out what my school show will be, we have gotten several hints. Our last show was Rogers and Hammerstein’s Cinderella and our dirrector said this show we are doing this year is more known/popular. It also has a lot of strings including a mandolin and a glockenspiel for percussion. Our director said it will be a more girl lead show than boy. Also, it was heard (but gossip) that the show would be around the same time frame of Cinderella. Not sure if that means fairytale times and medieval or like published (1957). Please help me out thanks!!!"

My guess is "The Sound of Music".