Heath was a prolific composer, influenced both by Wales and his time in
Salonica during the first war. Earlier in his career he was considered a forward looking composer, and enjoyed considerable success in Britain during the period 1919–24, with support and performances from the conductor
Henry Wood, the singer
Astra Desmond and the pianist
Benno Moiseiwitsch. Writing in 1924,
Arthur Eaglefield Hull described him as a composer who wrote "in a modern style which eliminates all literary and philosophical interest and relies on the purely musical appeal". Some 20 of his works were published over this period. Two pieces inspired by his time in Salonica - the
Serbian Quartet and the
Three Macedonian Sketches - were particularly popular, and used themes and rhythms he heard while there. Performances at
The Proms and on
BBC radio helped him gain national attention.
The Slopes of Kaimactchalen, an orchestral overture, was heard at The Proms, Queen's Hall in October 1919 with the composer conducting. A second Proms appearance came in October 1923 with his orchestral
Scherzo. And there were further significant performances in London, Birmingham and Liverpool. Later works include his Symphonic Study No. 2, written in response to the Second World War and dedicated to the men on the beaches at
Dunkirk, inspired by
John Masefield's poem ''Nine Days' Wonder''. The Cello Concerto, written in 1938 for his son Kenneth, was revived in 1962, and again on 1 October 2019 at St John's Smith Square. Some scores have been lost, including multiple violin sonatas (six) and trios (three?). But a substantial archive of manuscripts are held in the
National Library of Wales and the Hugh Owen Library,
Aberystwyth University. ==Works==