Philip Glass
Philip Glass (born January 31, 1937) is a three-time Academy Award-nominated American Western classical-music composer. He is considered one of the most influential composers of the late-20th century[1][2][3][4][5] and is widely acknowledged as a composer who has brought art music to the public (along with precursors such as Richard Strauss, Kurt Weill and Leonard Bernstein).
Glass is a prolific composer: he has written ensemble works, operas, 8 symphonies, 8 concertos, film scores, and solo works. Glass counts many visual artists, writers, musicians, and directors among his friends, including Richard Serra, Chuck Close, Doris Lessing, Allen Ginsberg, Errol Morris, Robert Wilson, JoAnne Akalaitis, John Moran, actors Bill Treacher and Peter Dean, Godfrey Reggio, Ravi Shankar, Linda Ronstadt, Paul Simon, David Bowie, Patti Smith, the conductor Dennis Russell Davies, and electronic musician Aphex Twin, who have all collaborated with him. Among recent collaborators are Glass' fellow New Yorkers Leonard Cohen, and Woody Allen. He has also composed an opera for the opening of the Expo '98.
Aaron Copland
Aaron Copland (November 14, 1900 – December 2, 1990) was an American composer of concert and film music, as well as an accomplished pianist. Instrumental in forging a distinctly American style of composition, he was widely known as “the dean of American composers.” Copland's music achieved a difficult balance between modern music and American folk styles, and the open, slowly changing harmonies of many of his works are said to evoke the vast American landscape. He incorporated percussive orchestration, changing meter, polyrhythms, polychords and tone rows. Aside from composing, Copland taught, presented music-related lectures, wrote books and articles, and served as a conductor (generally, but not always) of his own works.
Cruise over to "PANDORA" and "Last.FM.Com" to listen to works by these 2 composers
I really like the recording of Coplands "billy the kid suite" recorded by the San Fransico Symphony conducted by Micheal Tilson Thomas.