Mairi has performed as a solo artist, a sideman and is a member of the Cape Breton Celtic super group Beolach. She has performed with the Rankin Sisters, Unusual Suspects and Bruce Guthro to name a few. She has appeared on the television broadcasts of DRUM!, the East Coast Music Awards, Rita MacNeil's Christmas special and MNE's Togaidh Sinn Fonn in Scotland. Her festival credits internationally include Celtic Connections, Chicago Celtic Festival, Milwaukee Irish Festival, BLAS, Tønder Festival. In Canada she has performed at all the major folk and Celtic festivals including Winnipeg Folk Festival, Calgary Folk Festival, Edmonton Folk Festival, Dawson City Folk Festival and the internationally renowned Celtic Colours Festival.
As an educator Mairi has taught at Universities, schools, festivals and workshops. Some of these include Newcastle University, England; Augusta Heritage Festival, West Virginia; Ohio Scottish Arts School, Ohio; Buddy MacMaster School of Fiddling, Cape Breton and Blazin' in Beauly, Scotland. Mairi has recorded one solo album, two CDs with Beolach and has been featured on numerous compilations and recordings.