Still's composition remained predominantly tonal, but with strong use of dissonance. Early in his career he wrote songs and a since-lost light opera for the
Windsor Operatic Society, for which he was the conductor while still teaching at Eton. His compositions came to include many other songs, four symphonies, violin and piano concertos, four string quartets and other chamber music, three piano sonatas and an opera. In the mid-1950s,
Argo Records recorded a number of his chamber works, including the Quintet for three flutes, violin & cello and the Viola Sonata No 2. His Third Symphony (1960) was submitted to the University of Oxford in 1963, after being championed by
Sir Eugene Goossens, the conductor. This earned him an Oxford
doctorate in music. Goossens recorded the Symphony in 1966. The single movement Symphony No 4 was composed in 1964 and also recorded, conducted by Myer Fredman. The four string quartets were recorded by the Villiers Quartet in 2013-14. They show a stylist journey from the pre-classical and folk-song models of the first two (only Number 1 was performed during the composer's lifetime and was premiered in 1948), to the "without key" polytonality of the second two, which date from the 1960s and show the influence of
Bartok and
Schoenberg, and of Hans Keller, whose advice Still sought out at this period. ==Legacy==