http://www.oahuchoral.com/ The premier choir that performs with the Honolulu Symphony, Hawaii. http://www.oakland-sym-chorus.org/ East Bay's premier community resource for choral performance and learning. http://www.ugn.cas.cz/~konecpa/english.htm Student mixed chorus from Ostrava, Czech Republic). History, list of concerts and contact. Site in Czech and English. http://home.freeuk.net/oldhamchoral/ Mixed choir from Lancashire, England. http://members.dencity.com/oks/ Contemporary Christian and Secular vocal ensemble from Southern New Jersey. http://www.oratoriochorale.org/ An auditioned 50-member chorus that performs a broad repertoire of music in coastal Maine. Includes performance schedules, ticket information, and audition information. http://www.queensoratorio.org/ Classic choral works of past and present masters, bringing the best of choral music across the East River into Queens. Site includes membership information and performance schedule. Woodhaven, NY. http://www.oregonrepsingers.org/ Internationally recognized 50-voice ensemble from Portland, Oregon. http://listen.to/ormskirk.music.society/ Sings a varied repertoire, but by the nature of the society, specialises in choral works with orchestral accompaniment. Omskirk, Lancashire, England. http://www.orpheus.on.ca/ The choir is acclaimed for its musicality, versatility and innovation. http://www.ottchoralsoc.icomm.ca/ The largest choral society in Ottawa, Canada. Singing classical and modern choral works with the N.A.C Orchestra, the Ottawa Symphony Orchestra and Thirteen Strings. http://www.hants.org.uk/ocs/ Numbering 40 to 50 singers, the choir presents at least 3 concerts a year. Hampshire, England. http://users.ox.ac.uk/~azzopard/obc.html A mixed choir of 200 hundred voices from the City, the County and the University. http://homepage.ntlworld.com/jcadwell/octavian_singers.htm Performs a wide variety of music from Baroque to 20th Century, madrigals to major choral works. Woking, Surrey, England.