If you have had little experience with the library online catalog, please go to the Library Guide:
Music Research Materials - General and read the three "GETTING STARTED BOXES ON THAT PAGE." It won't take long.
Outside of the prose found in more traditional formats, up-to-date and often good information may be found on composer's official websites. Examples may be found below:
John Adams http://www.earbox.com/
http://www.stockhausen.org/
http://www.michaeldaugherty.net/
http://www.christopherrouse.com/
http://www.schwantner.net/
http://www.stevereich.com/
Some sites are constructed by publishers, groups otr even devoted individuals:
To find materials, go to the Classic Catalog Search and choose Advanced Keyword Search first.
Then, use the pull down menu on the left (the one that has the word "keyword" in it) and choose: LC Subject Heading
Then you may enter subject headings related to contemporary music and composition
Some valid subject headings for contemporary music that are important for those people studying composition are:
Music -- 20th century
Music -- 20th century -- History and criticism
Music -- 20th century -- Periodicals
Music -- 20th century -- Philosophy and aesthetics
Music -- 21st century -- History and criticism
Music -- 21st century -- Periodical
Aleatory music -- History and criticism
Computer music
Computer sound processing
Electronic music -- History and criticism
Minimal music -- History and criticism
Twelve-tone system
American Music Center http://www.amc.net/
Institute de Recherche et Coordination
Acoustiqe/Musique (IRCAM) http://www.ircam.fr/index-e.html
International Alliance for Women in Music http://www.iawm.org/
Inernational Computer Music Association (including the
online journal: Array) http://www.computermusic.org/
Other Minds http://otherminds.org/