sentences:  Coates performed the Bach "Mass in B minor" in the April Festival of 1915 at Queen's Hall, under Henri Verbrugghen.Coates then saw four years' war service in France as a captain in the Yorkshire Regiment (from 1916-1919).In March 1919, he signaled his return to music by giving the first of a long series of English-song recitals, with Anthony Bernard at the piano, at the Queen's Hall.