A Cappella Showcase - Harmony Inc. chorus from Milton, Ontario. - http://acappellashowcase.atspace.com/
A Cappella Showcase Chorus - Sweet Adeline Chorus from Frederick Maryland - http://www.acappellashowcase.com/
A cappella joy - Bellevue Washington Chapter of Sweet Adelines International - http://www.acappellajoy.org/
Aberdeen Chorus - Chorus of Sweet Adelines International from Aberdeen, Scotland who sing in four part harmony barbershop style. - http://www.aberdeenchorus.co.uk/
Agoura Hills Harmony - Dedicated to enhancing the appreciation of barbershop music through education performance, and enriching the variety of the artistic life of Ventura and Los Angeles Counties. - http://ahhchorus.com/