I'm listening to the 1956 movie soundtrack of The King and I, and this cute little voice is singing My Lord and Master, and I'm thinking to myself, I'll bet this is the last movie musical part she ever landed. It's a pretty voice, but very weak and shy. So I look at the credits.

It's Rita Moreno!

I guess she learned a wee bit about projection over the next 5 years, when she was cast in her next musical lead - in West Side Story.