R O Morris (b. 1886, York; d. 1948, London)

Reginald Owen Morris was educated at the Harrow School, New College and the Royal College of Music (RCM), London. He was appointed to the teaching staff at RCM and in 1926 became head of the Department of Theory at the Curtis Institute in Philadelphia. In 1928, Morris returned to London and the RCM, where he continued to teach for the rest of his life. 

Morris was considered a brilliant teacher of counterpoint, and wrote a number of influential texts on the subject including Introduction to Counterpoint, Contrapuntal Technique in the Sixteenth Century, Foundations of Practical Harmony and Counterpoint, and The Structure of Music. His many students included composers Gerald Finzi, Sir Michael Tippett, Constant Lambert, Anthony Milner, Edmund Rubbra, and Jean Coulthard.  Morris composed works for voices, string orchestra, string quartet, solo voice, and chamber orchestra with winds.