In 1992 the Hamilton Hair Razors Barbershop Chorus was formed with Jill Rodgers as the Musical Director. Lloyd Smith, a former member of gold medal-winning chorus in US, The Vocal Majority, was instrumental in providing expertise and guidance in the style. The City of Sails Chorus provided help and encouragement.
Barbershop singing has some elements of a competitive sport, and in 1996 we were the champion New Zealand chorus. Attendance at the 1998 Pan Pacific Convention in Hawaii with 51 members was a major highlight for the Chorus. The Chorus changed its name to Mighty River Harmony in February 2003. We hosted the 1995, 2003 and 2010 NZ Conventions of Barbershop Singers. In 2017 we won the New Zealand Gold Medal again at the Pan Pacific competition in Sydney.