Notes on music and its interpretation from the Classical Composers Database.

Filmography at IMDb includes films and television shows scored by him or using his music and a television movie based on his life.

Brief biography with summaries of film, orchestral, chamber, vocal and choral, and piano music and recommended recordings.

Biographical data, recommended CDs, books and sheet music, bibliography, and links to biographical essays from Dr. Estrella's Incredibly Abridged Dictionary of Composers.

Brief life and works, including royal honors from the Columbia Encyclopedia, Sixth Edition, 2001.

Includes discography, over twenty articles, including an extended biography, recording and performance news, and pictures.

Musical biography noting education and influences, especially Yeats and Irish culture, noted works, and musical development. From the from the Grove Concise Dictionary of Music entry at WQXR radio.