http://echo.phs.uiuc.edu/~kgp/xchords.html
http://students.cs.byu.edu/~glen/
http://webcommerce.com/pjm
http://www-personal.umich.edu/~bparnes/rockapella/
http://www.accel.com/pac/index.htm
http://www.artsci.wustl.edu/~cmtess/
http://www.ocf.berkeley.edu/~ksimon/index.html
http://www.seas.upenn.edu/~isaacson/
http://www.unt.edi/~ddas
http://www.unt.edu/~ddas
http://www2.amherst.edu/~dsbogartz/bacs.html
http://don.skidmore.edu/~cdoherty/dynamics.html
http://don.skidmore.edu/~cdoherty/whatIfound.html
http://users.aol.com/cyberchoir/homepage.html
http://www.accel.com/pac/index.htm
http://www.artsci.wustl.edu/~cmtess/
http://www.brown.edu/Students/Higher_Keys/
http://www.casa.org/arrangements_casa.html
http://www.earthlink.net/~bassguy/
http://www.ozlink.com/yinyang/index.htm
http://www.students.uiuc.edu/~ecoscoll/
http://www.unt.edu/~ddas
http://www.wpi.edu/~shm
http://albatross.psu.edu/~panulla/pma/AZ/dreamers.html
http://cec.wustl.edu/~mrb2/jt96.html
http://kogs-www.informatik.uni-hamburg.de/~mueller/sechsr/
http://www.accel.com/pac/index.htm
http://www.accel.com/pac/index.htm;
http://www.blarg.net/~turmoil
http://www.bobs.com/
http://www.casa.org
http://www.cs.wustl.edu/~seth/a-cappella/RARB/
http://www.icom.it/freeweb/casa
http://www.lainet.com/~cdbanzai/
http://www.mcs.com/~toma
http://www.mcs.com/~toma/www/pages/bbshop.faq.html
http://www.openmarket.com/
http://www.seas.upenn.edu/~isaacson/
http://www.singnet.com.sg/~lionelc/
http://www.tripod.com/~BassClar/kings.html
http://echo.phs.uiuc.edu/~kgp/xchords.html
http://exo.com/~dancertm
http://gwis2.circ.gwu.edu/~troubs
http://hcs.harvard.edu/~veritone
http://medinfo.labmed.umn.edu/Docs/.www/fasola_homepage.html
http://stripe.colorado.edu/~siffert/Home.html
http://web.mit.edu/choral/
http://web.mit.edu/sbj/www/home.html
http://web.mit.edu/stclair/www/
http://www.access.digex.net/~adric/casa.html|
http://www.access.digex.net/~adric|adric@access.digex.net|johnsonw@nasd.com|
http://www.artsci.wustl.edu/~cmtess/
http://www.aswas.com/mates/
http://www.casa.org
http://www.casa.org/web_directory.html#Collegiate
http://www.con.wesleyan.edu/groups/spirits/spirits.html
http://www.contrib.andrew.cmu.edu/usr/jsei/home.html
http://www.dartmouth.edu/~boyo/cords/
http://www.his.com/~sabol/PRC96.html
http://www.magi.com/~jfrewen/malaika.html.
http://www.mcsr.olemiss.edu/~mudws/harp.html
http://www.panix.com/~loren/
http://www.primenet.com/~mikebik/
http://www.singnet.com.sg/~lionelc/aka.html
http://www.skidmore.edu/~cdoherty
http://www.skidmore.edu/~cdoherty/
http://www.umich.edu/~bparnes/Rockapella/
http://www.wpi.edu/~alanhead