Are there some stories that should not be made into a musical?

I saw Oliver! last night in my film class. The story as written by Dickens is powerful and dramatic and the film was brilliantly acted. However, the film kept breaking out into huge production numbers with dancing butchers and nursemaids. The songs are good songs but for me, they totally detracted from the compelling plot.

Another example is a musical of Raisin in the Sun which is being produced locally as a musical – Raisin! (Perhaps the lesson is if they dropped off most of the title and put an exclamation point, don’t go see it.)

What’s your take? Are there novels or plays that you think should not be musicalized?