On a purely technical level, Jascha Heifetz has not been equalled, let alone surpassed. He possessed a strong command of structure, allied with minute attention to detail and a sensuously beautiful tone. At times he harked back in style to an earlier age by using certain tricks from the nineteenth century, especially little nudges of rubato and slithers of portamento. A programme such as this one, consisting of three sonatas, would rarely be heard from Heifetz and he usually appeared with an accompanist, rather than a pianist of his own stature. These three performances, including a bewitching César Franck Sonata, are doubly rare, in that he is partnered by three artists of the first rank.