I remember Ewan McVicar and Leon Rosselson having words on this subject.

Ewan had submitted some songs, for inclusion in a political song mag that Leon was in-part editing.

Leon refused to publish any song that did not have it's own unique, written tune, claiming that anything else was mearly a parody. He included in this some of my anti Thatcher songs written to traditional tunes, and some of Ewan's songs, including the CND protest songs.

As I recall Ewan go round this by writing an article on parodies.

John.