Schubert was visibly adventurous in his early piano sonatas, as is apparent in their wide-ranging key schemes, diverging versions of many movements or entire sonatas, and numerous works left incomplete. This revised Urtext edition contains the sonatas he composed between 1815 and 1817. An updated preface and valuable notes on central questions of performance practice (e.g. articulation, pedalling and embellishments), with a special emphasis on his idiosyncratic treatment of accent-like diminuendo hairpins, form a useful introduction to the sonatas.