His works include '' Nixon in China '' ( 1987 ) , '' Harmonielehre '' ( 1985 ) , '' Short Ride in a Fast Machine '' ( 1986 ) , '' On the Transmigration of Souls '' ( 2002 ) , a choral piece commemorating the victims of the September 11 , 2001 attacks ( for which he won the Pulitzer Prize for Music in 2003 ) , and '' Shaker Loops '' ( 1978 ) , a minimalist four-movement work for strings
September 11 , 2001 attacks
September 11 attacks
John Adams (composer)