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Ms Limburg said the chorus met for the first time in 1989 and began singing four-part close harmony in the barbershop style under musical director Mona Semke, and has had many successes in national and regional competitions under various directors over the years.
The group has become well known for its performances of modern, upbeat, inspirational and ballad-style songs, all with movement to help tell the story of the song.
Had it not been for Ms Limburg's vision, the organisation might not have eventuated.
''Dunedin never had a barbershop chorus, so I got together with a group of singing friends for a casual meeting at my home one day, and the rest is history,'' she said.
''Twenty-five years ago, I never dreamt the chorus would grow to this size and stature.
''It's wonderful to see today - absolutely brilliant.''
About 70 past and present members of the chorus met at Opoho Presbyterian Church on Saturday to celebrate the organisation's 25th anniversary.
Not surprisingly, the afternoon included performances by quartets, the chorus and a massed sing-along with all past and present members.