Complex sentence: Quilter enjoyed a fruitful collaboration with the tenor Gervase Elwes until the latter's death in 1921 and in November 1936, Quilter's opera "Julia" was presented at Covent Garden by the British Music Drama Opera Company under the direction of Vladimir Rosing.
Split into simpler sentences: Quilter enjoyed a fruitful collaboration with the tenor Gervase Elwes until the latter's death in 1921. In November 1936, Quilter's opera "Julia" was presented at Covent Garden by the British Music Drama Opera Company under the direction of Vladimir Rosing.