DOWNLOAD Sonata in G Minor Op. 7 No. 3 by Muzio Clementi (published in 1782) . High quality classical piano scores from the Piano Street sheet music library. Muzio Clementi, one of the prominent composers active in the Classical era, has written this piece titled Sonata Op. 7 No. 3 in G Minor from Sonatas. The composition is categorized as "Sonata" in Piano Street's sheet music library and the level of difficulty is 8.