Useful links
Phoenix A Cappella Chorus www.phoenixladies.org
Sweet Adelines International www.sweetadelineintl.org
Ladies Association of British Barbershop Singers (LABBS) www.labbs.org.uk
The society for the preservation and encouragement of Barbershop Quartet Singing in America Inc. (SPEBSQSA) www.spebsqsa.org
Harmony Inc. www.harmonyinc.org