He then explained what he tried to do for Carey, when he was under her employment:
Working with an artist like Mariah, who’s not a mover first, it’s always a challenge to get them to think physically and not just vocally. You always have to keep in mind that they’re a singer first…I wanted to give Mariah a modern push to revamp her, give her a fresher, more modern feel, make her more aware of her body and her lines, and not look like her feet hurt when she’s walking.
Emphasis mine, because damn.