They of course will get instructions by the producers what to do and what not. They surely will not be allow to “just do what they” like on a multi million dollar francise by Disney.
Yeah, I remember a conversation between Göransson and Favreau from a Mandalorian making-of where Göransson said to Favreau, if he expected something like Williams’ music they had got a problem, and Favreau responded, no no, he should just provide what he thinks is right. Yes, they wanted an original dedicated musical language for the show.
But as Göransson said himself. It wasn’t the case, that he said, you can get whatever you want, I can do anything. He said, “If you want the original SW sound, then I am not your guy.”