The Queen Elizabeth Hall, 1969

This is a remarkable recording. From 1969, a year after the Queen Elizabeth Hall opened on London's South Bank, came a landmark performance of Schubert's The Trout.

The performers were Daniel Barenboim, ltzhak Perlman, Pinchas Zukerman, Jacqueline du Pré and Zubin Mehta, all young musicians who would go on to become some of the most famous of the age.

What's so great about this film is not just that it captures this remarkable performance, but that it also records the backstage antics of the performers, and the backstage spaces of the Queen Elizabeth Hall too, when they were pristine. Unlike the signs above the exterior doors, which read 'LIZA T AL' and 'PURCELL RO'.