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.
“Even in college I tended to get cast in the comedies more. It was what I liked doing.”
“While all the other kids were out playing ball and stuff, I used to stay in my room and imagine that there was a camera in the wall. And I used to really believe that I was putting on a television show and that it was going out to somewhere in the world.”