Sound Celebration
- A mixed quartet with two Sweet Adelines and two SPEBSQSA members from Brackney, Pennsylvania.
- http://www.singers.com/barbershop/soundcelebration.html

Celebration a cappella Quartet
- Male and Female quartet singing vocal jazz, Barbershop, religious and comedy.Information about the quartet and how to get in touch with them for performances and singing valentines .
- http://www.celebrationquartet.net/

Kalliope
- A jazzy, modern a cappella quartet from southeast Pennsylvania with a repertoire runs from jazz to pop to hymns.
- http://www.kalliopesong.com/

The Honeymooners
- A mixed harmony a cappella quartet made up of 2 married couples entertaining with their own brand of doo wop and barbershop.
- http://www.hmquartet.com

The Worthingaires
- Worthing Barbershop Harmony Club. One of the first mixed choruses in the UK.
- http://website.lineone.net/~ann-drew/

Friends
- Eight married couples from Minneapolis who perform Broadway to Barbershop. Producers of Mixed Harmony Showcase at Society International conventions
- http://www.friendsharmony.org/

A Cappella Pops
- A mixed-voice chorus in the Philadelphia area that sings exciting and unique arrangements of progressive music - mixing the sounds and styles of barbershop, jazz, folk, broadway and gospel.
- http://www.acappellapops.com/