Classical musicians do this all the time. They want perfection. So they piece things together. Eight bars of this and six bars of that. Glenn Gould said that with a recording he wanted to make perfect versions of pieces.
“I am through with this body, and what becomes of it will make no difference with me in the future.”
“At Microsoft there are lots of brilliant ideas but the image is that they all come from the top - I'm afraid that's not quite right.”