A Cappella York on Facebook
www.facebook.com
Ontario District Barbershop Harmony Society
www.ontariodistrict.com
Harmonize for Speech www.harmonize4speech.org
Barbershop Harmony Society
www.barbershop.org
Ontario Trillium Foundation
www.otf.ca
York Harmony Chorus
www.yorkharmonychorus.ca
Sing Canada Harmony
www.singcanadaharmony.ca
www.singcanadaharmony.ca