I am like 95% sure that all the notes are correct, but I don't think the instruments are or the settings to replicate them. Also I couldn't find any audio clip of the "see into the star" lyric part so I had to carve out some of the instrumental in the wav but I couldn't remove all of it. So this act is probably my least accurate but I think it's close enough.
I am sorry @Tjmben that you couldn't help me with act 4 even though you seemed quite thrilled to help. I decided to do it myself because I felt it was easier, but there is a lot that can be fixed with this act, so that is where you can help.