Stephen Johnson with the Gould Piano Trio and friends explore Schubert's Quintet. (R)
BBC Radio 3
Charles Hazlewood and the quintet Tango Volcano explore the world of the tango.
Paul Allen explores Spohr's popular Nonet with Ensemble 360.
Stephen Johnson explores ideas behind the music of French composer Henri Dutilleux.
Martin Handley and the BBC SSO explore some of the ideas behind Bartok's Divertimento.