Musicman...
Considering that Tommy was originally wriiten as a rock opera, recorded twice (once by the Who, the second by an all-star cast and an operatic choir) before it was made into a movie, I do not consider it to be a movie turned musical, due to the fact that it stayed truer to the original than the actual movie (which had a whole bunch of extra Really bad songs)
"Do you know what pledge time is, Andrew"? said the PBS Executive.
"Yes", Lloyd Webber replied. "My 50th birthday special must be one program that gets done a lot."
"No", mused the man from PBS heedlessy. "Not so much. Our Stephen Sondheim Carnegie Hall concert. That's a big one."
Spoons, forks and knives seemed suddenly to suspend their motion in horror, all around the table.