I think "Broadway" contains all styles of music, from rock to pop to classical depending on the type of show.
I think the main difference is in the singing style.
Singing always need to feel truthful to me. Which is a right balance between natural singing and acting.
Like Sephyr said, the goal is to act and sing the song in the best possible way. If it sounds like a trick/technique/vibrato, it takes away from that. Also when it's not sung well enough and too much spoken, the singing sounds silly and it also takes away from that.
Good, truthful singing therefore always results in truthful acting. I think a young Whitney Houston was a fantastic actress through song.
That is what went so horribly wrong with Hugh Jackman in the Les mis film. He speaks one word, and the next word he uses a forced vibrato of 20 seconds, which feels like a "Broadway parody". Nothing truthful.
While many theatre performers who have played the role sound much more filmic/real/truthful, as they keep other notes longer and those notes short. They are just better natural singers so the performance feels more real.
Also, sometimes 1 performer (Lea Salonga for example) can do it right at one time (most of the time, Miss Saigon London, Les mis 10th anniversary) but goes overboard another time (Miss Saigon Manila), where it also tends to sound like a Broadway trick/parody.
Which is what people (unfounded) might see as "Broadway sound".
This video shows what I mean:
https://www.youtube.com/watch?v=WcS1uIarnME
Updated On: 12/29/15 at 07:18 AM