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.
“If you want to be a good blues singer, people are going to be down on you, so dress like you're going to the bank to borrow money.”
“And she could never give me an answer. And I realized that, you know, I had a problem on my hands.”