Allegro and Andante (Fantasie in F), KV608
taken from the preface:
'The present work (An organ piece for a clock) appeared in various arrangements in the nineteenth century. Our version, for two flutes and piano, with the piano part being kept as transparent as possible, is intended to make an especially valuable late work of Mozart available in an arrangement for chamber ensemble.'
Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).