Stephen Rees is a musician who has been deeply involved in the traditional music of Wales for many years. He was a member of the Welsh folk groups Ar Log and Crasdant, with whom he recorded and performed throughout North and South America, Europe and the UK. A founder member of the folk music organisations Clera (1996) and trac (1997), he has taught traditional music workshops throughout Wales. Between 2006 and 2011, he was joint musical director of Y Glerorfa (the Welsh Folk Orchestra). He is a music lecturer at Bangor University.