HaydnÂ's famous sonata, written for longtime friend Marianne von Genzinger, is available here in Urtext and facsimile formats. Its score is based on the new edition of HaydnÂ's piano sonatas as revised by Ulrich Leisinger. Textual problems have been solved due to the evaluation of a newly discovered manuscript copy, and this edition also includes a preface with information about the genesis of the work. For advanced players. Includes facsimile of the original autograph score.