Plot: In the last of six programmes recorded at the 1979 Henry Wood Promenade Concerts, a rare appearance on British television by the Israel Philharmonic Orchestra under their principal conductor Zubin Mehta with Daniel Barenboim as soloist in the Piano Concerto No 4 in G major by Beethoven DAVID JACOBS introduces the concert, traces the unique history of this famous orchestra, and talks to these two celebrated artists.