As founding member of folk-jazz ensemble Rose Vaughan Trio (Sweet Tarragon,1992; Fire in the Snow, 1993; Winter Rose, 1996; A Winter's Tide, 2006; Gardeners of the Moon, projected release 2016) and the funky cajun-country group, Dave Carmichael Band (Perspective, 1997), Cathy has been co-writing, co-arranging, and co-producing original material for many years. She went on to co-produce albums with Eric Fresia (Down at the Opera, 2004 - from which the cut "Gabriella" won Best Song in the World Music category of the John Lennon Songwriting Contest), and for the late fiddler Fleur Mainville in her acoustic vocal recording debut (Once, 2011). Cathy continues this work with the launch of her current project, 5th Business, which presents her songwriting, arranging and production in a variety of styles, and assembles some of the most interesting and diverse vocalists and musicians on Canada’s East Coast.
Her co-write, "Merry Christmas, Lonely Cowboy" (2008), recorded by both George Canyon and Dave Gunning, has become a perennial favourite. In 2010, CBC TV's Holiday Festival on Ice commissioned ice skating choreography for a live taping of the song, performed by George Canyon.
Several Aeolian Singers' International Woman's Day events (Halifax, NS) have featured her work with the Rose Vaughan Trio, including a commission of her arrangements for choir (to which she added Barbershop-style choreography), and in 2005 she served as Co-Artistic Director with singer-songwriter Susan Crowe in a theatrical tribute to internationally acclaimed poet Elizabeth Bishop.
As Halifax's Centre for Art Tapes first Audio Scholarship recipient in 1990, Cathy created an audio piece entitled "Souls in the Rinse Cycle" and invited Toronto-based choreographer/dancer (and sister) Sara Porter to help present the piece, which independently went on to show in Madrid, Edinburgh, Montreal, and Toronto.
A long-time accompanist for ballet and modern dance classes on both piano and percussion, Cathy has worked on and off since 1989 for the Halifax Dance Association (HDA), Dance Nova Scotia (DANS), Montreal's Les Ballet Jazz, and most recently for Canadian modern dance icon Peggy Baker.
Cathy was presented the 2013 Musician’s Achievement Award by the East Coast Music Association, the first woman in ECMA history to receive the honour.