Ontario Strings Association's annual Orchestra Festival offers performance and clinic opportunities to string and symphonic orchestras from across our province. The festival experience includes a wonderful facility with a separate warm-up and performance venue, leadership award, performance feedback from more than one adjudicator and a recording of the performance. After the performance, each ensemble will receive a clinic with one of our esteemed festival adjudicators. This is a valuable and viable opportunity for ensembles of all levels.

All levels of string and symphonic orchestra are welcome and may choose adjudication only if they choose.

Please email osafestival@gmail.com for more information


Mark Chambers

Mark Chambers is a conductor, cellist and early music specialist. He studied cello with Martha Gerschefski, Lubomir Georgiev and David Miller, and has performed extensively in the United States and Ontario as both a chamber musician and orchestral player. At York, Dr. Chambers directs the York University Symphony Orchestra and the Baroque Ensemble. He performs in a trio with his faculty colleague and clarinetist, Patricia Wait and pianist Elizabeth Acker. He is also very active as a clinician and adjudicator throughout southern Ontario.

A former Theodore Presser Foundation Fellow, Dr. Chambers' research interests include Baroque music, period instrument performance practice, the 'Tartini Tone', and scordatura, altered tunings for strings. He has authored several articles for the American String Teachers Journal and is a contributor to the New Grove Dictionary of Music and Musicians.

Prior to his appointment at York, Dr. Chambers taught for nine years at Eastern Kentucky University, where he performed as a member of the Faculty Piano Trio and the Faculty String Quartet. He joined York's Department of Music in 2005.

Richard Mascall

Award winning Canadian composer, conductor and music educator, Richard Mascall grew up in Toronto, Canada but originally hails from England. His classical music training began at North Toronto Collegiate Institute, as well as at the Royal Conservatory of Music. Richard went on to study musical composition at the University of Toronto’s Faculty of Music and at Wilfred Laurier. Mr. Mascall moved to the small rural Ontario town of Leith, near Owen Sound on Georgian Bay in 2005 and from 2006-2010 served as the Composer-in-Residence for the Georgian Bay Symphony. During that time he founded the Georgian Bay Symphony Youth Orchestra, an ensemble he directed for twelve seasons. A sought after conductor and clinician, Richard has been on the string faculty of the Kincardine Summer Music Festival since 2007, and has worked in 2016-17 at Interprovincial Music Camp (IMC) and Music at Port Milford. During the past decade, Mr. Mascall has taken a great interest in aboriginal art and culture and has to this point written eleven native themed works. In January 2012, Mr. Mascall was honoured with the spirit name ‘Singing Beaver on Water’.

Leonid Peisahov

Leonid Peisahov was born in Tbilisi (Georgia) and began studying violin at the age of 6, under the tuition of Prof. L. Jashvili. He studied at Conservatory “V. Saradzishvili”, under Prof. K. Vardely. During his studies he performed many recitals and concerts with Georgian Philharmonic Orchestra. In 1988, he enrolled in a Master’s degree at Tbilisi Conservatory under great violinist Oleg Kagan. During this time he worked as an assistant professor at the Conservatory. In 1991, he moved to Skopje (R. Macedonia) when he was invited by Macedonian Philharmonic Orchestra. He later became Concertmaster of the Macedonian Philharmonic, where he also founded a string quartet, which successfully performed concerts and participated in studio recordings for Macedonian Radio-Television. In 1994, he became a leader of the Chamber Orchestra for Macedonian Radio-Television. Leonid became a permanent resident of Canada in 2004 and became principal second violin in Sinfonia Toronto. He has also enjoyed positions of principal second violin in the Brantford Symphony and assistant concertmaster of the Oshawa Symphony. In 2009, Leonid began working as a strings itinerant music instructor for Toronto District School Board and works every year with the All City Orchestra. Leonid is gifted and dedicated teacher, with years of experience preparing students for exams and competitions.

Angela Rudden

Angela Rudden received a B. Mus in Kingston Ontario and went on to complete her Masters in Viola Performance in Munich. While in Germany Angela played regularly with the Stuttgart Philharmonic, the Tibor Varga Chamber Orchestra as well as the Munich Chamber Orchestras.

She has performed both as soloist and as chamber musician throughout Canada, the United States, Europe and Japan.

Angela is currently Principal Viola of the National Ballet of Canada Orchestra, where she often appears regularly as a soloist at the Four Seasons Centre and most recently at the National Arts Centre. She also plays in the Canadian Opera Orchestra and the Toronto Symphony.

Angela is a viola coach at Cardinal Carter Performance High School, as well a violin/viola teacher at Dixon Hall Music School and occasional guest viola teacher at U of T and Queen’s University. She has been playing and coaching chamber music in Prince Edward County at Music at Port Milford Chamber Music Camp and Festival for the past 20 some years.

John Trembath

Mr. Trembath studied with Jack Kirstein of the LaSalle Quartet and Peter Howard of the St. Paul Chamber Orchestra. Since graduating from the University of Cincinnati, he has served as principal and assistant principal cellist with the Kitchener-Waterloo Symphony, principal cello with the Kingston Symphony, Toronto Pops and the Phantom of the Opera orchestras. Mr. Trembath also performed with many orchestras across Canada including the Hamilton Philharmonic, National Ballet, Canadian Opera, Symphony Nova Scotia and as featured soloist with the Huronia Symphony, Scarborough Philharmonic and the Trinity Chamber Ensemble. Mr. Trembath can also be heard on recordings with the Canadian Chamber Ensemble and the Kitchener-Waterloo Symphony and the Canadian cast recording of the Phantom of the Opera.

He currently free-lances in the GTA, performs chamber music with Trio Bravo and is principal cello of the Huronia Symphony.

Mr. Trembath has served musicians in various non-performance capacities including Chairman of Organization of Canadian Symphonic Musicians, OCSM Director of Symphonic Services Division SSD and as President and chief negotiator of AFM Local 149.

Mr. Trembath taught for the Toronto District School Board, Havergal College and National Music Camp of Canada.