Written by Franois Joseph Naderman (1781-1835),Sonatinas Progressive, Op. 92consists of a series of seven small sonatas. The level of difficulty alternates between intermediate and advanced as these can be played at different speeds but necessitates some strong technique as well as some pedal changes. TheseSonatinas Progressive, Op. 92are still considered as some of the most famous pieces of the harp repertoire today. Franois Joseph Naderman was a classical harpist, composer and teacher at the Paris Conservatoire. His vocation was developed by growing up as the son of a Luthier harp maker. He also wrote Sonatas for harp, harp and cello, studies and other pieces.