Centertonix is the Cotuit Center for the Arts' a cappella group. This exciting ensemble includes a variety of ages and vocal talents, and is prepared to entertain you with jazz, show tunes, pop, and doo-wop numbers. Their beautiful sound will be sure to delight.

Under the musical direction of Steve Stein, the group began meeting in March 2017. They debuted at the Cotuit Center’s Derby Day Celebration two months later.

Today Centertonix presents a cappella harmony from a wide range of styles and eras. This is a group of talented a cappella singers whose mission is to entertain with an inspiring sound and to educate audiences about the wide variety of a cappella genres.

The group is available to share with you their love of harmony and knowledge of a cappella history. Their excitement, energy, and talent can be hired for your speakers’ series, private party, retirement community, outdoor venue, and organization’s activity.

Please contact Centertonix artist manager Idell Stein at for information.

Rehearsals are Tuesday evenings from 7-9PM. Auditions are ongoing with admittance based upon the talent of the auditionee and the specific vocal needs of the group.

Meet the Group

Rob Anderson learned to sing in church choirs in Worcester and Wilbraham. A “knee-knocking” choir solo as a 10 year old at the First Baptist Church, Worcester set off a love of singing. Fellow Centertonix member Ben Ayres and Rob sang together many years ago in that boys’ choir. Rob is a Master Gardener with the Barnstable County Extension Service and a ‘semi-retired' attorney/farmer. Rob’s business card states, “Attorney at Farm.” Rob jokes that he honed his singing talents after rugby matches at Colby College.

Ben Ayres sings bass. He was in the glee clubs of Pomfret School and Dartmouth College. As a teacher of English, he has lived in Vermont, Manhattan, Pennsylvania and Cape Cod. He and his wife Amanda now reside in Hyannisport. One son is in the Air Force and the other is in business. He is one of the original members of Centertonix and is happy to continue making music with the group!

Aimee Champagne is a student in Sandwich public schools. Aimee has performed in school plays and musicals for a few years. She has also performed in shows at the Cotuit Center for the Arts. Aimee started singing from an early age in church. This is her first experience with a cappella music. She is so grateful to be part of such a talented group.

Liesl Keller has been singing with Centertonix since its inception in 2017. She teaches elementary music at Kenneth C. Coombs School in Mashpee and is working toward a Master's degree in Choral Conducting. She enjoys accompanying and directing music for local theater productions and is the pianist and organist at St. Peter's Episcopal Church in Buzzards Bay.

Bobbi Langmead is one of many musicians in her family. She has loved singing her whole life. She studied voice in college and has sung in Chamber Singer groups, various concert chorales, a female a capella group, Mastersingers by the Sea, music theater shows, and most recently a bluegrass band. She loves teaching Fourth grade at Mullen-Hall school in Falmouth and incorporating music in her classroom any chance she gets. Bobbi is supported by her husband, Billy, and their two children, Aaron and Cadence. She is thrilled to be part of Centertonix!

Janet Leahy grew up singing in church choirs and chamber music ensembles in high school, and received a vocal scholarship to college. Since moving to Cape Cod 20 years ago, she has been active in several vocal and musical theater groups, including a mid-Cape madrigal group. She also has extensive experience teaching music to children and singing for the elderly. Recently, Janet appeared in Scrooge-The Musical and Elegies for Angels, Punks and Raging Queens at CCftA. In 2019, she and her husband Brian wrote and co-produced the original children’s musical “Astray and the Shelter Dogs,” based Katy McDermott’s book. Janet and Brian are members of the local musical trio Kindred Spirit, along with bassist Laird Boles.

Liam Mahony is the former director of “Half Step Down,” the a cappella ensemble of Sturgis Charter Public School East in Hyannis, a group he started with his son in 2013. Earlier in life, he studied classical piano in college, and sang in several choirs, including Boston’s Back Bay Chorale. After a long break from singing, Liam is thrilled to have the opportunity to sing a cappella with Centertonix. Liam also recently performed as an Apostle in CCFTA's 2018 production of Jesus Christ Superstar, and in the chorus of CCFTA's (2019) Sweeney Todd.

Sue Martin grew up in a musical family, with a mother who was a concert pianist and a student of Bela Bartok. Sue began piano lessons at the age of four, but singing was always a passion of hers. She sang in school and church choirs as a student, and was a soloist with the Tufts University Chorus. A career as a librarian made it impossible for her to sing regularly for nearly three decades, but when she retired as the Director of the Georgetown University Library and came to the Cape, she joined the Cranberry Shores Chorus (women's barbershop), and became a member of several quartets. She continues her voice lessons and sings regularly in recitals locally. She and her husband David live with their two cats in Marstons Mills.

Kim Mitchell is delighted to join Centertonix. She learned about the group from Janet Leahy while performing in Elegies at CCftA. Kim began singing in the NJ All State High School Chorus, studied classical voice, pursued vocal performance/jazz studies at NYU before shifting gears, becoming a high school counselor. A high soprano Kim has sung with Vox (New Bedford), is an inproviser who completed the training program at Providence Inprov Guild as well as completing musical improv classes at Wage House. She performed with Cape Improv (Chatham First Night) and Toby Britches Improv (Cotuit). Kim, a songwriter/multi-instrumentalist who plays ukulele (started at Cotuit with Steve Gregory), piano, flute, whistle, and guitar, was lead vocalist for several live bands as well as in studio recording sessions. Favorite theatre roles include Lucy(You’re a Good Man Charlie Brown, Sandwich Town Hall), Mary Amnesia(Nunsense, Chatham Drama Guild) and Peggy (Godspell, Woods Hole Theatre Company).

Ashley Moore is an elementary school teacher in the Falmouth School District. . Her own musical education started at a young age when she began playing the viola in her school music program and studying at the Cape Cod Conservatory. She has performed in State and Regional Orchestras and small Chamber Groups. This is her first experience singing with a group. She is excited and looking forward to singing with Centertonix!

Brian Morris owned and operated Morris Creative Services, an audio production company in North Eastham, MA for 15 years. Most recently, he was a reporter, producer and host for WCAI, the Cape & Islands NPR Station, serving as local host for the programs “Morning Edition” and “All Things Considered.” Brian also is a professional musician, composer, award-winning songwriter, and voice-over artist.

John Quesnel started singing around his mother’s piano at age 3, and hasn’t stopped since. He sang with, and was the emcee for the Narragansett Bay Chorus in Providence for 20 years, competing in International competitions in 11 of those years. He has sung in many quartets, most notably the “P’s & Q’s” with his wife Linda and another couple, who for 10 years entertained audiences from Maine to Florida. Prior to retiring, John was an actuary and principal in a pension consulting firm.

Linda Quesnel is fortunate to have been born into a music-loving family. Everyone played at least one instrument, and singing harmony was part of every family gathering. She has sung in 6 competitive choruses, and sang in the regional champion quartet,”Jazz Reunion.” She also sang for 10 years with her husband in the medal-winning mixed a cappella quartet,”P’s & Q’s”. Linda is a retired Marriage and Family Therapist, and finds singing time to be her personal therapy.

Steve Stein, musical director, has nearly 50 years of a cappella group experiences, from his high school barbershop quartet, to singing with and directing the MIT Logarhythms, to singing with the Cape Cod Surftones and the quartet “Take the Fifth”. In his years of choral singing, he has sung with the Tanglewood Festival Chorus, the New World Chorale and Chorus Pro Musica. He has also appeared in many musical theater productions including Scrooge and Pirates of Penzance at CCftA and most recently as Counsel for the Plaintiff in Eventide's production of Trial by Jury.

Robb Topolski was finally allowed to begin music lessons as soon as he got to G in learning the alphabet, even though he still couldn't reach the pedals on mom's Hammond organ. From pre-teens to the present day, from religious to irreverent, from Guam to Washington DC, he has over 40 years of vocal experience including school and church choirs, the Tualatin Valley Harmony Masters, Route 26, Intel Voice Connection, One Bit Parody, Spare Time, Bridge Town Sound, the Alexandria Harmonizers, the Cape Cod Surftones, and Take the Fifth quartets. Robb lives with his also-musical husband, Dennis, in Yarmouth Port.