Leighton was educated in Queen’s University, Oxford and in 1951 won the Mendelssohn Scholarship or grant, enabling him to keep his research in Rome. He received many distinguished awards and was appointed as lecturer and Fellow of Worcester University in 1968. In 1970 he was produced Reid Teacher of Music at Edinburgh University or college. His compositions contain vocal, orchestral and chamber, and single instrumental functions. They have an enchanting, lyric quality and contain virtuoso single passages. He uses 12-tone structure in the custom of Berg, a method that created from his previously usage of chromaticism. A lot of his function is diatonic, nevertheless, and he frequently attracts upon the extremely organized works from the Baroque period being a model for his function.