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The Children's Orchestra Society (COS) is a non-profit organization in New York City founded by Dr. Hiao Tsiun Ma for musically talented children and teens.[1][2]
- ^ About Us, The Children's Orchestra Society, ChildrensOrch.org, 2007 Archived 2007-07-11 at the Wayback Machine, retrieved on: July 7, 2007
- ^ Cite error: The named reference
COS3was invoked but never defined (see the help page).