[Nicolai P. Zwar]

The notes are still there, true, (just like the dialogue, characters, and plot may be there in two different performances of Hamlet), but the differences in performance of, say, the Goldberg variations a single performer can bring to the piece may be considerable. Even nuanced differences can lead to a different experience of the same piece. Especially if you are quite familiar with it.
So the principle, blueprint vs performance, applies. Though of course it’s rare the same movie gets made based on basically the same screenplay, though even that has happened.