As i understand it if you were american it was ok to sing american songs at the singers club, for example it was ok for peggy seeger and tom paley to sing songs from the appalachian mountains even though they were from the east coast, of course they were and are very good performers. Ewan sang songs from Scotland he was born in salford but his mother was scottish and he had heard her singing the scottish songs at home, I do not think he sang many lancashire or manchester traditional songs, I dont think he sang lancashire dialect songs either. Harry Boardman used to sing lancashire songs and used to sing an intersting song called cob coaling