Był twórcą nowej koncepcji wychowania muzycznego dzieci i młodzieży.
Prace (na podstawie materiałów źródłowych) Music and Society: England and the European Tradition (Londyn 1946) Studies in Contemporary Music (Londyn 1947) François Couperin and the French Classical Tradition (Londyn 1950; 2. wyd. zrewid. 1987) Music in the Making (Londyn 1952) Romanticism and the 20th Century (Londyn 1957; 2. wyd. zrewid. 1988) The Sonata Principle (Londyn 1957; 2. wyd. zrewid. 1988) Music in a New Found Land: Themes and Developments in History of American Music (Londyn 1964; 2. wyd. zrewid. 1987) Harmonious Meeting: A Study of the Relationship between English Music, Poetry and Theatre, c. 1600–1900 (Londyn 1965) Caliban Reborn: Renewal in Twentieth-Century Music (Nowy Jork 1967) Twilight of the Gods: The Music of the Beatles (Nowy Jork 1973) Bach and the Dance of God (Nowy Jork 1980) Beethoven and the Voice of God (Londyn 1983) A Darker Shade of Pale: A Backdrop to Bob Dylan (Londyn 1984) Angels of the Night: Popular Female Singers of Our Time (Londyn 1986) The Masks of Orpheus: Seven Stages in the Story European Music (Manchester–Wolfeboro 1987) Le