There's going to be an innovative, genre-blending show every few years... so I'll go in order
1. Show Boat (Book musical)
2. Oklahoma! (And that's the first with the exclamation point, so it beats Oh Calcutta! :) also, serious things spoken about in a musical. Such had been touched on in Show Boat, but it still had a Follies-esque element )
3. Hair (which beats Oh Calcutta! by being the first rock musical... understandably so. If you think the first rock musical, you’re going to think Hair.)
4. Company (rethinking of a type of musical, and though it wasn’t groundbreaking at the time to the audiences, it placed a landmark for the type of musicals that were created onward)
5. A Chorus Line (say no more)
6. Cats (as much as I hate putting this here, it was the beginning of the mega British pop-rock shows, yes even more than Evita and JCS. It changed contemporary Broadway more than anything. If it’s a positive or negative change, well I can’t say, but it cause a change)
SondheimGeek: Is it slightly pathetic that you guys get to be Jedi bitches, and I'm Bitchy the Hutt?
LizzieCurry: No, you're more memorable