FOSS is an acronym for free and open source software that is most often used in English-speaking military software communities. The acronym was first used in a 2003 MITREreport (http://www.terrybollinger.com/index.html#dodfoss) that documented widespread use of, and reliance on, free software and open source software in the United States Department of Defense. Free software, as defined by the Free Software Foundation (FSF), is software which is free as in freedom, not as in beer (also referred to as libre or freedom software). ... Open source refers to projects that are open to the public and which draw on other projects that are freely available to the general public. ... The mitre or miter is a traditional, ceremonial head-dress of bishops in the Roman Catholic Church, the Anglican Communion and Eastern Orthodoxy. ... The United States Department of Defense, abbreviated as DoD or DOD and sometimes called the Defense Department, is a civilian Cabinet organization of the United States government. ...
Foss was yet 15 when G. Schirmer issued his first published work, a series of piano pieces composed mostly on the New York subway.
In turn, Foss blended his experimental instincts with tradition in Echoi of 1963, a work for four virtuosi, now widely considered to be one of the chamber masterworks of the 20th century.
Foss became the Music Director of the Brooklyn Philharmonic in 1971, the Musical Adviser of the Jerusalem Symphony in 1972 and the Music Director of the Milwaukee Symphony in 1981.