| LABBS - Ladies Association of British Barbershop Singers' |
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| BABS - British Association of Barbershop Singers' |
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| BHS - Barbershop Harmony Society |
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| Harmony, Inc. - Sister organisation in America |
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| Music in Essex - The Directory of Musical Societies in Essex, UK |
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| Harmony Girls Choir - East Anglia's finest young choir for girls aged 12 to 18 with two training choirs for younger girls based in Ipswich and South Norfolk |
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