Yes, I believe that is correct. If you do something "transformative" with the material then you are allowed to treat it as something new. There's also the idea

Yes, I believe that is correct. If you do something "transformative" with the material then you are allowed to treat it as something new. There's also the idea of using a portion of a copyrighted work (like a quote or a clip of a song or video), this would be "fair use".