David Coulter works throughout the world as a musician, director, curator, consultant and educator. He is a musical and artistic director of large-scale music and theatre events for Sydney Opera House, Artangel, Southbank Centre, The Barbican, The Sage, Gateshead, Melbourne Arts Centre, Melbourne Recital Hall, Les Nuits de Fourviere in Lyon, and La Salle Pleyel in Paris. He composes for dance, theatre, cinema, television and radio. He is widely regarded as one of the world's foremost musical saw players. Here, he talks to Richard Strange as part of 'A Mighty Big If' and demonstrates his music with the saw.