Here's a snippet of the article:
Just like actual Broadway productions, film musicals are costly to mount, making them dicey propositions. Plus, the singing cowboys of "Oklahoma!" and the swinging gamblers of "Guys and Dolls" are a hard sell to a generation bred on reality TV.
"In this day and age, we don't accept the old convention that people just burst into song," says John Kenneth Muir, author of "Singing a New Tune." "You have to have a canny director to find the right film translation..."
Check it out at The New York Post, though I think you have to register to read it...