THOMASTON — Two chapters of the Barbershop Harmony Society, The Nor’easters of Brunswick and The Windjammers of Camden, will perform a “Barbershop Bonanza” on Saturday, Oct. 12, at Watts Hall at 7 p.m.

This concert is sponsored by the special events committee of the Episcopal Church of St. John Baptist, Thomaston, and will benefit local and worldwide outreach programs.

The Nor’easters of Brunswick has been an active chapter for 47 years and is made up of Baritones Del Merritt, James Mitchell, Clark Porter and Harris Whitehead; basses Harry Harden, Larry Larochelle, Vic Macomber, Dick Miller, Ray Robitaille and Jon Whitmore; leads Wil Arseneault, Joe Civita, Cotton Damon, John O’Connor, Jerry Purinton, Ed Robinson, Mike Rubin and Tom Weiss; and tenors Charlie Kettell and Tom Wagers.

The Windjammers of Camden have been an active chapter for more than 20 years. Both chapters of choruses and quartets have been directed by Kathy Robitaille of Alna for the past 14 years and entertaining audiences throughout the Mid-coast with songs from all genres of music, dating back to the early 1900s up to the modern age with favorites such as “Danny Boy,” “Shenandoah,” “Hello Mary Lou,” “Little Darlin,” “Take me Home Country Roads” and many more.

Barbershop singing in a capella style has been going strong for 75 years from when it was started in Tulsa, Okla. Chord production in a barbershop setting differs from that of a traditional chorus organization primarily with reference to the melody.

Barbershop music is based on four parts of different pitch and timbre: the lead who typically sings the melody line, the tenor slightly above, the bass sings the lowest, with the baritone filling in the missing harmony tones.

Tickets are $12 for adults; youth 18 years and younger are free. Tickets will be available at the door or by calling 354-8908 for more information.

Watts Hall, which will be open at 6:30 p.m., is located at 174 Main St., Route 1, in Thomaston and is fully accessible.