sentences:  Once the contact was made, Moore became Coates' sole accompanist for four or five years.Moore devotes a chapter of his memoirs to Coates.He found the tenor a hard taskmaster, but one who transformed him from a mediocre accompanist to an artist with a full realisation of the duties and possibilities of the accompanist's role, aware of the necessity of being a full participant in every living nuance and accent of the music at hand.