On Sunday 10 April 2016 the Royal College of Music welcomed back Sir András Schiff, one of the world's most celebrated pianists, for a masterclass with talented RCM musicians. In this clip, Schiff works with Martin James Bartlett on Schubert's Impromptus op 90. The Royal College of Music offers a regular series of public masterclasses, most of which are free. To find out what's on visit the RCM website http://www.rcm.ac.uk/events