The interesting thing about "HAIR" is that in its day, the stage show (which is almost a review of songs, with about 1 1/2 pages of plot) was a revolution and a revelation that extended far beyond the Broadway stage. It was the last musical to have MANY songs from its score become hits on the pop charts. It was a very turbulent time. When the movie came out in the late '70s, the country's general attitude had changed so drastically. People were tired of hearing about the Vietnam war, both in the news and in the movie theatre. This movie came out at the height of the "disco" era, when people just wanted to escape and have fun. It flopped, despite some mild critical praise. The irony (to me) is that if you look at both of these "animals" now with over 25 years and more of a perspective... I would have to agree that the film is actually better. Milos Forman and Twyla Tharp did an amazing job, and I think Galt MacDermot brought so much more to his own music in the film. The cast was great (many of them from the New York theatre community), and it's a very powerful film.
Shifting gears...
I would have to say that "The Sound of Music" is a better film, if for no other reason than for its locations. The show (despite its tie for "Best Musical" that year) received mixed reviews. It was pretty land-locked to see Mary Martin as Maria wheeled out at the beginning hanging from a paper mache tree to sing the title song. How can that possibly compete with the famous helicopter shot from the movie? The book was punched up for the film (Bravo, Ernest Lehman!), and songs were switched around. Maria and the Mother Abbess no longer sang "My Favorite Things" in the Abby, and the kids and Maria no longer sang "The Lonely Goatherd" during the thunder storm. Both worked better in their new "positions" as a result.
"Oliver!" is a better film than stage show. Again some incredible switching of songs was done that improved the through-line and tension. My hat is over to director Carol Reed, who (not unlike Hitchcock) was able to build suspense. The best example is "Oom-Pa-Pa," which is a throw-away song in the stage show. In the film it was repositioned. Nancy uses it as a diversion to help Oliver escape from the clutches of Bill Sykes. Brilliant! A stellar cast helped as well.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22