Post-1900's Era By devianic Period: Sep 13, 1874 to Jul 13, 1951 Arnold Schoenberg Period: Jun 17, 1882 to Apr 6, 1971 Igor Stravinsky Period: Nov 14, 1900 to Dec 2, 1990 Aaron Copland Period: Dec 10, 1908 to Apr 27, 1992 Olivier Messiaen Period: Dec 30, 1910 to Nov 18, 1999 Paul Bowles Period: Sep 5, 1912 to Aug 12, 1992 John Cage Period: Mar 26, 1925 to Jan 5, 2016 Pierre Boulez 1932 Electric Guitar Invented Feb 8, 1932 John Williams Birth (still alive) Oct 3, 1936 Steve Reich Birth (still alive) Jan 31, 1937 Philip Glass Birth (still alive) Feb 15, 1947 John Adams Birth (still alive) Mar 22, 1966 Max Richter Birth (still alive) Jul 20, 1969 Moon Landing Jan 2, 1970 Eric Whitacre Birth (still alive) Jan 26, 1977 Ēriks Ešenvalds Birth (still alive) 1996 Straight No Chaser Founded Sep 11, 2001 9/11