Sir Malcolm Henry Arnold, CBE (21 October 1921 – 23 September 2006) was an English composer. His output of works features music in many genres, including a cycle of nine symphonies, numerous concertos, concert works, chamber music, choral music and music for brass band and wind band. He wrote extensively for the theatre, with five ballets specially commissioned by the Royal Ballet, as well as two operas and a musical. He also produced scores for more than a hundred films, among these The Bridge on the River Kwai (1957), for which he won an Oscar.
Malcolm Arnold was born in Northampton, Northamptonshire, England, the youngest of five children from a prosperous Northampton family of shoemakers. After seeing Louis Armstrong play in Bournemouth, he took up the trumpet at the age of 12 and five years later won a scholarship to the Royal College of Music (R.C.M.).
At the RCM he studied composition with Gordon Jacob and the trumpet with Ernest Hall. In 1941 he joined the London Philharmonic Orchestra (LPO) as second trumpet and became principal trumpet in 1943.
In 1941 he registered as a conscientious objector, but in the event he was allowed to continue in the LPO. In 1944, after his brother in the Royal Air Force had been killed, he volunteered for military service. When the army put him in a military band he shot himself in the foot to get back to civilian life. After a season as principal trumpet with the BBC Symphony Orchestra he returned to the London Philharmonic in 1946 where he remained until 1948 when he left to become a full-time composer.
Arnold began his career playing trumpet professionally, but by the age of 30 his life was devoted to composition. He was ranked with Benjamin Britten as one of the most sought-after composers in Britain. His natural melodic gift earned him a reputation as a composer of light music in works such as some of his concert overtures and the sets of Welsh, English, Scottish, Irish and Cornish dances. He was also a highly successful composer of film music, penning the scores to over a hundred features and documentaries, including titles such as The Bridge on the River Kwai, Hobson's Choice and the St Trinian's series. His nine symphonies are often deeply personal and show a more serious side to his work, which has proved more controversial. Arnold also wrote a variety of concertos and chamber works, as well as music for the theatre including major ballets.