Idina-Marin tookk the role going in with the request of tweaking the score a tad to fit her voice. That is knowing your instrument and taking care of yourself. She delivered an amazing performance consistently. That part of the actor's job.
"The new york accent which he uses (which is really strong) can take a toll on ones voice as well as all of the notes he needs to belt."
Let's just say that some of these young kids aren't up to scratch. Anyone see Ebersole in GG? Two different accents, both strong and labor intensive mixed with shrieking, screaming, singing and belting and she performed with a cold. She had no alternate.
Older performers were just brought up differently.
"The sexual energy between the mother and son really concerns me!"-random woman behind me at Next to Normal
"I want to meet him after and bang him!"-random woman who exposed her breasts at Rock of Ages, referring to James Carpinello