Leopold Spinner (26 April 1906 – 12 August 1980) was a Ukrainian-born, British-domiciled composer and editor.
Spinner was born of Austrian parentage in Lemberg (now Lviv, Ukraine). From 1926 to 1930 he studied composition in Vienna with Paul Amadeus Pisk and afterwards began to attract international attention with works which were performed at the ISCM Festivals or awarded prizes. Nevertheless, from 1935 to 1938 he underwent a second period of study, as a pupil of Anton Webern. He may be regarded as a representative of the so-called Second Viennese School. In 1939 Spinner emigrated to England and spent the war years in Yorkshire, working part of the time as a lathe operator in a locomotive factory in Bradford. From 1947 he worked as a music-copyist and arranger for Boosey & Hawkes (Graubart 2013), moving to London in 1954. In 1958 he succeeded Erwin Stein as editor at Boosey & Hawkes, later becoming Chief Editor (Graubart 2013). He remained with Boosey & Hawkes until his retirement in 1975. His skills and exactitude were highly praised by Stravinsky.
From 1926 to his death in London in 1980 Spinner steadily and painstakingly built up an individual body of work, adapting and renewing classical forms along the lines (but eventually, much further) that had been indicated by his teacher Webern. They include an early Symphony for small orchestra (1933), an Ouvertüre in honour of Schoenberg’s 70th birthday (1944), a Piano Concerto (1947, later revised as a Concerto for piano with chamber orchestra), a Violin Concerto (1953–55, though this remained in pencil score), Prelude and Variations dedicated to Stravinsky (1962), Ricercata for orchestra (1965), Cantatas on poems of Nietzsche (1951) and on German folksong texts (1964), string quartets, trios, works for violin and piano, solo piano pieces, several sets of songs and some arrangements of Irish folksongs. His last work was a Chamber Symphony (1977–79).