Mozart Sonata G K283 (189h ) Arranged for Flute and Harp. This arrangement provides the flute and harp repertoire with a significant composition from the classical era. The sonata is the last in a set of five that Mozart likely began in Salzburg and completed in Munich in 1775, The most polished and sophisticated of the set, it remains among the most popular of what Mozart called his " difficult sonatas " distinguishing these works from his earlier solo keyboard sonatas.