Cellist Jacqueline du Pré and pianist Daniel Barenboim prepare to record Brahms's Cello Sonata no.2 and test for sound. Killing time between takes, du Pré plays the piano, with her husband looking over her shoulder.

Watch: Jacqueline du Pré performs the Elgar Cello Concerto

Read: Great Cellists: Jacqueline du Pré

Read: The instruments and bows of Jacqueline du Pré