"Franz Schubert's Piano Sonata op. 143 in a minor was composed in 1823 after his large ''Wanderer Fantasy''. With its formal cohesion and mature originality, this a-minor Sonata initiated a new phase in Schubert's sonata oeuvre. The composer dispensed here with all pianistic brilliance. At the same time, a wealth of colour and of sonorities triumphs in such a manner that the work numbers among Schubert's most frequently played sonatas. For this Urtext edition, we had at our disposal the composer's autograph as the authoritative source the posthumous first edition was consulted only by way of comparison."