Dernière sonate pour le piano forte, avec accompaniment de violon
À Paris : publiée par Naderman ; À Londres : par Clementi & Co., 
Stanford University Libraries, Memorial Library of Music, MLM 498
In advance of a visit to Paris in 1803, Prince Esterházy asked Haydn to compose a new piano sonata as a gift for Louise-Alexandrine-Eugénie Moreau, the French-Creole wife of the famous general Jean Victor Moreau, and hostess of an influential Paris salon. Haydn, pleading illness, sent instead a copy of the sonata for piano with violin and 'cello accompaniment (HXV:31) minus the somewhat superfluous ‘cello part. In an accompanying letter to Madame Moreau, Haydn apologizes for not composing something new, due to his failing health, and promises to fulfill his duties once he regains his strength.