Mary O’Donnell began her harp studies with the late Sr. Eugene McCabe at Mount Sackville School in Dublin and later with Fiona Norwood, Sebastien Lipman, and masterclasses with the renowned harpist and teacher Edward Witsenberg. She graduated from Trinity College Dublin with an honours degree in Music in 1996. She also completed an ARIAM in Irish harp and LTCL in Concert harp performance. Mary holds a Higher Diploma in Education (TCD), a Masters in Musicology from University College Dublin, and a Ph.D from the University of Limerick.
She has been a consistent winner at the Feis Ceoil, winning prizes in Irish harp, Concert harp, singing and composition. She has toured Europe, USA, Africa and Asia and appeared on RTÉ, BBC, CNN, and NBC. She has toured extensively in Europe, North America, Africa and Asia. She lectured in Ethno musicology at the VEC (2000–05) and at the University of Limerick. Mary now examines with the Royal Irish Academy of Music, Dublin, and lectures at St. Patrick’s College, Drumcondra.