It was only a few months back that I found out that Vangelis couldn't read or write music notation. He would just improv play and record on a tape, recording additional parts and mixing as needed. If he needed to have other musicians involved, then he would hire someone to listen back and write down the notation.
Considering he recorded something like 35 albums, he was doing something right.
Considering he recorded something like 35 albums, he was doing something right.