Michael - yes, that makes more sense. Copying a complete performance is different. However - 'There are many fine musicians who don't write their own material.'. That sounds as though they should be writing their own, but we can forgive them. The idea that people 'should' be writing their own material is alien to both trad and classical music. We don't look at it that way. We are just looking after the music and then handing it on the next generation. Some of us will add to it by writing new material, some won't, and everyone I know who writes songs/tunes is delighted if someone else picks up one of their songs/tunes.