As I said in the vanished thread, the trailers jump about a fair bit. (Does Maui have his fishhook in this shot? No? How about the next shot?)
However, Moana is derivative of folk tales; and some of Disney's prior works have also been derivative of folk tales.
New song (released yesterday) from Moana: "How Far I'll Go" sung by Alessia Cara.[video=youtube;KeiHafI9EuI]https://www.youtube.com/watch?v=KeiHafI9EuI[/video]