Klein and Arnaz, while rather long-in-the-tooth to be playing the parts now, were wonderful. The show waswonderful. But I have always felt that it never "entered the canon" of musical theatre greats because it only has, what - seven songs? In the following decades, shows became so dense. SO MUCH goes on in "Crazy for You" or "The Producers" or "Spamalot", there is SO MUCH stage direction and "bits" in shows nowadays that "Playing Our Song" seems antiquated. It's just a guy, a girl and the voices in their heads. It's almost a twohander - and how many of them are considered "classics"?
And a great deal of the show is Simon's book.....
http://www.broadwayworld.com/board/readmessage.cfm?thread=972787#3631451
http://www.broadwayworld.com/board/readmessage.cfm?thread=963561#3533883
http://www.broadwayworld.com/board/readmessage.cfm?thread=955158#3440952
http://www.broadwayworld.com/board/readmessage.cfm?thread=954269#3427915
http://www.broadwayworld.com/board/readmessage.cfm?thread=955012#3441622
http://www.broadwayworld.com/board/readmessage.cfm?thread=954344#3428699