We are extremely proud of our staff. Each artistic staff member is an accomplished musician in his or her own right, and has many years working with children in educational and musical endeavours.


 Artistic Director

Kathryn Berko trained at the University of Calgary, where she earned both her Bachelors of Music and Education, with piano as her primary instrument. Kathryn taught for three years as a music specialist for the Calgary Separate School District, directed the Calgary Boys' Junior Choir (North), and has assisted with the Calgary Childrens Choir and the Mount Royal Children's Choir. Also a trained singer, she has sung with several of Calgary's community choirs, including Ad Libitum Vocal Arts Ensemble, Mount Royals Kantorei, and the University of Calgary Chamber Choir.


Her position as Principal Accompanist is really a return to the Calgary Boys' Choir; previously, she directed the Young Singers and Early Childhood Music programs. Kathryn currently  runs an at home private studio where she teaches piano, voice, and theory.


Young Singers, South

Claire is from the North-East of England and studied piano at the Royal College of Music, London, with professors John Barstow and Bernard Roberts. At RCM she gained much experience with singers and participated in vocal coaching with distinguished professors Roger Vignoles, Wolfgang Holzmair, Stephen Roberts and Emma Kirby. 

Claire was awarded an accompaniment prize at RCM and won a prize for her performance of Shostakovich's Piano Concerto No. 1 with trumpet. 


Claire has enjoyed an extensive and varied music career as performer, teacher and director. Now residing in Calgary, she is music and choir director at St Andrew's Anglican Church, accompanist at Calgary Girls Choir, Montessori music specialist and enjoys performing with classical/jazz ensemble Clicquot Trio. 


Young Singers, Central

Léane Mercier-Tardif studied at the Faculté St. Jean of the University of Alberta, where she obtained her Bachelor of Education with a major in French and a minor in Music. Following, university, Léane obtained a scholarship to study music pedagogy at the Zoltán Kodály Pedagogical Institute of Music in Kecskemét, Hungary. She also obtained a Diploma of Fine Arts (Kodály Focus) from the University of Calgary. Léane taught for six years as a music specialist in Edmonton and Calgary before moving to the UK for three years. While in the UK, she attended the Dalcroze International Summer School in Canterbury. Léane's choral experience ranges from teaching the Calgary Boys' Choir Young Singers in 2004-05 and 2009, as well as the children's choirs at her schools, to singing with several choirs in every city that she has called home. She is currently a member of the EnChor Chamber Ensemble.


What Léane loves doing most is sharing her love of music with young children. She recently moved back from Houston with her husband Pierre and three children: Olivier, Évangeline, and Amélie. She is very happy to be home and a part of the Calgary Boys' Choir staff again.



Managing Director

A native of Saskatchewan, Erin MacLean-Berko attended the University of Regina, studying Vocal Performance with Lynn Channing. After relocating to Calgary, she completed her Diploma in Vocal Performance at Mount Royal University, under the direction of Dawn Johnson. She completed her Bachelor’s degree in Music History from the University of Calgary with an emphasis on vocal music, theory, and music and gender, and her Master of Arts in Musicology, from the University of Regina under Dr. Pauline Minevich.

Ms. MacLean-Berko is the General Manager for the Calgary Boys’ Choir Society and the Spiritus Chamber Choir of Calgary. She continues to participate in solo projects, vocal ensembles, conducts a community children’s choir, and is a member of ARMTA with her private, home-based voice studio. She contributes research to Calgary’s Military Museums, has assisted and participated in conferences and symposiums on such subjects as “Soundscapes” and “Queer Theory,” and was the research assistant for the Canada Research Chair in Interactive Media and Performance.


General Manager

Elizabeth Garrett fell in love with choral music at an early age, singing in her grade school choir. High school brought her to Cawthra Park School for the Arts in Mississauga, Ontario, where she continued singing in vocal ensembles while taking courses in Theatre, Dance, Musical Theatre, and Photography. 


Elizabeth received an academic scholarship to attend the Fine Arts Studies degree program at York University, where her major focused on the interplay between arts disciplines and culture, politics and history. During her studies she was accepted into the Classical Voice Performance courses and sang with the York U. Chamber choir. She also started and was first president of the York U. Fine Arts Studies Student Association.


Since moving to Calgary, she has sung with a number of groups including Spiritus and Fresh Blend Acapella. 


Previous arts work experience includes Marketing Coordinator positions at Calgary Opera and the CPO. After taking time away to raise children, Elizabeth is thrilled to be back in arts administration and working with Calgary Boys’ Choir.

KARI OROSZ, BA (Arch), BA (Hist)

Principal Accompanist

Kari Orosz grew up in a musical family in rural Saskatchewan and began working as a church accompanist at age eleven. In addition to piano, she plays trumpet and has sung alto & soprano in many choirs over the years, including the Calgary Philharmonic Chorus. She is the organist for St Thomas United Church, where she enjoys providing music for Sunday services and has accompanied several choirs & soloists there since 2005.

Kari received her Grade 10 Piano from the Royal Conservatory of Music in 2003 and holds two Bachelor of Arts degrees in Archaeology & History from the University of Calgary.