Par VAUGHAN WILLIAMS RALPH. On his return to civilian life after five years Army service in the First World War, Vaughan Williams revised some pre-war works, such as The Lark Ascending and his opera Hugh the Drover , and embarked on new compositions - the Pastoral Symphony , the one-act Bunyan episode The Shepherds of the Delectable Mountains and the Mass in G minor - all of which have outwardly i…