Complex sentence: The choir was founded by Colin Jones on 1st September 1991, and composed of singers who Colin had taught and conducted previously in choirs across North Wales, their first public performance being in Wrexham, N Wales in February 1993.
Split into simpler sentences: The choir was founded by Colin Jones on 1st September 1991, and composed of singers who Colin had taught and conducted previously in choirs across North Wales. The first public performance being in Wrexham, N Wales in February 1993.