Plot: In the third of this series of Henry Wood Promenade Concerts recorded at the Royal Albert Hall , London, Colin Davis conducts the London Symphony Orchestra leader MICHAEL DAVIS in the first performance of Michael Tippett 's Concerto for violin, viola, cello and orchestra, with Gyorgy Pauk (violin), Nabuko Imai (viola) and Ralph Kirshbaum (cello). The programme also includes the tone poem En Saga by Sibelius