Deryck Cooke (14 September 1919 – 27 October 1976) was a British musician, musicologist and broadcaster.
Cooke was born in Leicester to a poor, working-class family; his father died when he was a child, but his mother was able to afford piano lessons. Cooke acquired a brilliant technique and began to compose. He won an organ scholarship to Selwyn College, Cambridge, where he was taught by Patrick Hadley and Robin Orr. His undergraduate studies were interrupted by the Second World War, during which he served in the Royal Artillery and took part in the invasion of Italy. Towards the end of the war he became pianist in an army dance band.
Back in Cambridge, a number of his compositions were successfully performed, but he was insecure about their unfashionably conservative idiom, and eventually destroyed most of his works. After graduating in 1947 Cooke joined the BBC; apart from an interlude (1959–65) working as a freelance writer and critic, he worked for the corporation for the remainder of his life. His job involved writing and editing scripts for the music department and broadcasting for radio and television, where his thoughtful, unaffected manner made him an ideal communicator. In 1959 his first book The Language of Music argued that music is essentially a language of the emotions, and showed that composers throughout history had tended to choose the same musical phrases to express similar feelings or dramatic situations.
Beginning in the run-up to the Mahler centenary in 1960, Cooke (in association with Berthold Goldschmidt) made his first attempt at producing a 'performing version' of the unfinished draft of Mahler's 10th Symphony. Originally a lecture demonstration broadcast by the BBC in 1960, the first full (continuous) version was premièred on 13 August 1964 at the Proms by the London Symphony Orchestra under the baton of Goldschmidt. Revised editions followed, with the composers David Matthews and Colin Matthews assisting Cooke and Goldschmidt in the attempt to produce an authentically Mahlerian orchestration. Finally seen into print by Cooke and his collaborators in 1976, the work has now become a part of the repertoire.