| Carl Nielsen: Official site from the Danish Music Information Center and the Danish Carl Nielsen Society. Links to biography and photographs, the Society, and order information for CD-ROM. |
| Carl Nielsen: Listing at the Lied and Art Songs Text Page with lyrics to vocal works including song cycles. |
| Carl Nielsen: Filmography from the Internet Movie Database listing the use of his works in motion pictures. |
| Carl Nielsen: Karadar dictionary entry with life, summary of works, photograph, and MIDI audio sample from his Sixth Symphony. |
| Carl Nielsen (1865-1931): Malaspina Great Books listing of Library of Congress citations of his works, including librettos, addresses, essays, and lectures. |
| Carl Nielsen (1865-1931): Brief biographical sketch, comments on orchestral and chamber music, caricature, and Naxos discography. |
| Carl Nielsen (1865-1931): Brief biographical sketch, caricature, summaries of orchestral and chamber works, and Naxos discography. |
| Carl Nielsen (1865-1931): Biography tracing evolution of his style, noted works and genres, photograph, and discography from Dacapo Records. |
| Carl Nielsen's Childhood Home: Small photo collection. |
| Classical Music Archives: Nielsen: Biography from the Concise Oxford Dictionary of Music. Over 10 complete files offered in MIDI, MP3, and Windows Media audio formats, including live recordings of featured artists. |
| Nielsen: Recommendations from Classical Net's Basic Repertoire list. |
| Nielsen: The Fog Catalogue: Andrew Jackson presents a rendering of the FS catalogue, first compiled in 1965 by Dan Fog and Torben Schousboe. Recognized as the authoritative listing of works by the composer. |