Composition

Roberto Sierra
Arts, Music, Composition, Composers - Roberto Sierra. Official site.
http://www.robertosierra.com/
Ralph Vaughan Williams Society
Arts, Music, Composition, Composers - The RVW Society. Official Vaughan Williams society, founded in 1994.
https://www.rvwsociety.com/
Frank Martin (1890-1974)
Arts, Music, Composition, Composers - Frank Martin (1890-1974). Official site of the Société Frank Martin.
http://www.frankmartin.org/
Petals-music on the net
Arts, Music, Composition, Composers - Petals-music on the net. Biography, works, discography, links.
http://www.petals.org/
The Villa-Lobos Magazine
Arts, Music, Composition, Composers - The Villa-Lobos Magazine. Ezine offering links and commentary to concerts, articles, biographies, commentaries, and related materials on the web and from other sources.
http://villa-lobos.blogspot.com/
Sandor Veress - The Componist
Arts, Music, Composition, Composers - Sándor Veress. Biography, works, compositions, discography and publishers.
https://veress.net/
Kevin Volans :
Arts, Music, Composition, Composers - Kevin Volans. Official site.
http://kevinvolans.com/
The Haydn/Mozart String Quartet Quiz
Arts, Music, Composition, Composers - Haydn/Mozart String Quartet Quiz. Tests ability to distinguish between quartets written by Haydn and Mozart.
http://qq.themefinder.org