When you've found your living ideal for Schubert's sonatas - Elisabeth Leonskaja  surely - it can be a challenge to stay open-minded and welcome another take on the profundities Mitsuko Uchida didn't make it easy for herself or us at the start by plunging into the technical challenges of the fierce C minor Sonata  first in the miraculous final trilogy  nor did she hint more than fleetingly at the sublime to come