A few quibbles, henrik:
While it's certainly true that SHOW BOAT has moments of integration that suggest what Hammerstein would accomplish later, it really can't be compared to OKLAHOMA! on that ground. Witness how no two productions of SHOW BOAT even have the same song list; the same can't be said of OKLAHOMA! (I agree they are both watersheds; I just think you overstated the case for the earlier show.)
THE MOST HAPPY FELLA is one of my favorite scores and it has a lot of music. But it is by no means through-sung. G&S came closer long before and even they included short dialogue passages.
If you want to point to an early through-sung musical, Weill's STREET SCENE comes much closer, though even there one finds occasional spoken lines. (And of course there's the original draft of PORGY AND BESS, but that wasn't seen on Broadway in 1935.)
As for the "concept musical", I don't think one can call COMPANY the first. I'd argue that Robbins had been moving in that direction for two decades and how were CABARET and ZORBA anything but? If we get over the pro-WEST SIDE STORY bias, I'd go so far as to argue that THE MUSIC MAN has all the elements we later associate with the concept musical: use of non-theatrical influences (train, marching band, etc.), substitution of theatrical conventions for representational action (barbershop quartet), etc. and so forth.
What COMPANY did do was give us a show where concept was substituted entirely for plot--and did it so well that it influenced later shows. And a show where the songs commented rather than advancing the plot (a direct rejection of the Hammerstein conventions). To be precise, Sondheim ("FORUM") and WEILL ("LOVE LIFE") had done these things before, but I agree that COMPANY was the "watershed" that converted most of us to think in terms of concept over plot.
(Another earlier example would be HAIR. I tend to think of HAIR as sui generis (despite attempts to imitate it) and it's hard for me to imagine Prince and Sondheim being influenced by it, but it is almost as plotless as COMPANY.)
In short, I agree with your list. I'm merely quibbling about some of your reasoning.
Updated On: 11/6/13 at 07:56 PM