Marilynne was a founder member of Polyphonia - a network of European Conservatoires - and has lectured and conducted workshops in Sweden, Portugal, France, Lithuania, Norway, Holland and Austria. She is particularly interested in the practice of performance and led a European research project in that field, the results of which have been disseminated across the conservatoires. In addition she has been external examiner at the universities of Edinburgh, Durham, Wolverhampton, Southampton, Huddersfield, University College Chichester, and an external assessor of performance at graduate and postgraduate levels.
As a past Warden of the Incorporated Society of Musicians Marilynne has represented the Society in collaboration with the University of Reading developing courses for music teachers and performers. As a conductor she has trained and conducted orchestras and choirs on a regular basis, some of whom have performed on BBC and ITV. The largest ensemble was a choir of 1100 school children and the smallest a chamber choir of 40 voices with whom she toured abroad on many occasions.
During her time as Deputy Music Director of Harrogate Choral Society, Marilynne has founded the Harrogate Polyphonic Choir and a small vocal ensemble Beati.