Key of Eh? - A Barbershop Quartet from Montreal, Canada. These 4 guys enjoy entertaining in the A Cappella style known as Barbershop. - http://www.nedistrict.org/keyofeh/
Kindred Spirit - Quartet singers in the Ontario district. All members of the MegaCity chorus. - http://homepages.msn.com/playingfields/magicgo/Main.html
Keystone - A quartet from Pittsburgh, Pennsylvania. - http://www.pittsburghmetro.com/keystone/