http://www.seanoboyle.com.au/ Australian composer, conductor, producer and performer http://www.musica.cz/comp/obrovska.htm (1930- ), Prague, Czech Republic. Biography and selected works, from the Czech Music Information Project. http://www.xs4all.nl/~gaud/oud/biobak/o/obstm.htm (1955- ), Frankfort, Germany. Biography and discussion of 'Kristallwelt I,' from the Gaudeamus Foundation. http://www.leisureplanetmusic.com/composer/ocker/bio.htm (1951- ) Picture, biography, about the music, list of works, and about 'Pynchon,' from Leissure Music Planet. http://www.cmc.ie/composers/oconnell.html (1958- ), Derry, Ireland. Picture, biography, and selected works, from the Contemporary Music Centre, Ireland. http://www.clt.astate.edu/toconnor/frontpage.htm#tombio Picture, biography, and works. http://www.musica.cz/comp/odstrcil.htm (1930- ), Valaske Mezirici, Czech Republic. Biography and selected works from the Czech Music Information Project. http://www.timescraper.de/komponisten/helmut_oehring.html (1961- ), Berlin, Germany. Biography from Timescraper Music. http://www.musiccentre.ca/CMC/dac_rca/eng/k_/Oesterle_Michael.html (1968- ), Ulm, Germany. Picture, biography, and works. http://www.cmc.ie/composers/ofarrell.html (1966- ), Dublin, Ireland. Picture, biography, and selected works, from the Contemporary Music Centre, Ireland. http://www.amc.net/member/Will_Ogdon/home.html Picture, biography, and works, from the American Music Center. http://www.people.memphis.edu/~bogle/ Picture, biography, and list of works. http://www.zzz.ee/edition49/composers/e_oja/index.htm (1973- ), Tallinn, Estonia. Picture, biography, and works, from edition49. http://www.cmc.ie/composers/olearyj.html (1946- ), Hartford, Connecticut. Picture, biography, and selected works, from the Comtemporary Music Centre, Ireland. http://www.cmc.ie/composers/olearym.html (1963- ), Dublin, Ireland. Picture, biography, and selected works, from the Contemporary Music Centre, Ireland. http://users.rowan.edu/~oliver/ (1942- ) Includes biographical sketch, a catalog of his compositions, scores and sound files, and a brief essay. http://www.musiccentre.ca/CMC/dac_rca/eng/k_/Oliver_John.html (1959- ), Vancouver, British Columbia. Picture, biography, selected works, and CDs, from the Canadian Music Centre. http://www.aquanet.co.il/vip/imi/bios/olivero.htm (1954- ), Tel Aviv, Israel. Picture, biography, selected works, and CDs, from the Israel Music Institute. http://www.amcoz.com.au/comp/o/volive.htm (1950- ), London, England. Picture, biography, and list of works and recordings, from the Australian Music Centre. http://www.mic.stim.se/avd/mic/prod/personer.nsf/a7137b1c99bbacbe4125656a00368f66/653f8e12f014bac541256492002d3550!OpenDocument (1962- ), Karlskrona, Sweden. Biography from the Swedish Music Information Center. http://vfmusic.bizland.com/ (1961- ), St. Paul, Minnesota. Biography, works, and events, from Vischer Ferry Music Publishing Co. http://www.composer.co.uk/composers/oneill.html (1970- ), Cheltenham, England. Picture, biography, selected works, and sound file, from the British Composers World Wide Web Project. http://www.amcoz.com.au/comp/o/aoost.htm (1947- ), Amsterdam, Holland. Biography and list of works and recordings, from the Australian Music Centre. http://www.voxnovus.com/Marco_Oppedisano.htm (1971- ) Picture, biography, selected works with sound files and information, from Vox Novus. http://www.research.ibm.com/mathsci/cmc/cmc_do.htm Acoustic and computer music composer. Biography, selected works with notes and sound files. http://members.sibeliusmusic.com/DOQuinn Compositions with scores and sound using Sibelius Music, and links. http://www.telnet.hu/bmc/showcomp.php3?name=Orbán%20György (1947- ), Romania. Biography and works, from the Hungarian Music Information Centre. http://www.notam02.no/~cecilieo/bio.html List of works from New York Women Composers. http://www.aquanet.co.il/vip/imi/bios/orgad.htm (1926- ), Gelsenkirchen, Germany. Picture and biography, from the Israel Music Institute. http://www4.tpgi.com.au/morlovic (1970- ), Sydney, Australia. Picture, biography, compositions, recordings, performances, and press. http://www.otherminds.org/shtml/Ornstein.shtml (1892-2002) Picture and biography, from Other Minds. http://www.geocities.com/williamortiz00953/ Picture, biography, list of works, recordings, and reviews. http://www.xs4all.nl/~gaud/oud/biobak/o/ortizt.htm (1964- ), Mexico City, Mexico. Biography and discussion of 'Huitzil' (1989), from the Gaudeamus Foundation. http://curve.to Sound artist and composer who creates sound-based work in sculpture, installation, performance, and public art. Biography, explanation of Sound Culture, and examples of Audio Recordings of Great Works of Art. http://www.uymp.co.uk/text/osborne.html (1948- ) Picture, biography, and catalog of works from the University of York Music Press. http://detritus.net/ostertag/ (1957- ), Albuquerque, New Mexico. Biography, CDs, photographs, and reviews. http://www.xs4all.nl/~gaud/oud/biobak/o/ottd.htm (1960- ), Grub, Switzerland. Biography and discussion of 'Molto Sempicimente' (1988/89), from the Gaudeamus Foundation. http://www.mindspring.com/~ottzen/index.html Composer, classical and jazz harpist, and teacher. Picture, biography, and sound files. http://www.musiccentre.ca/CMC/dac_rca/eng/k_/Ouellette_Antoine.html (1960- ), Montréal, Québec. Picture, biography, list of works, and CDs, from the Canadian Music Centre. http://www.xs4all.nl/~gaud/oud/biobak/o/ovsepyap.htm (1966- ), Azerbaijan. Biography and discussion of 'Now the shadow of the pillar...,' from the Gaudeamus Foundation. http://www.terrywinterowens.com/ Picture, biography, commissions and awards, performances, and list of works, from the American Music Center.