Mandolin 1796: Sonatine WoO 43a; Adagio ma non troppo WoO 43b; Sonatine WoO 44a and Andante con Variazioni WoO 44b. The opera "Don Giovanni" by Mozart (1787) includes mandolin parts, including the accompaniment to the famous aria "Deh vieni alla finestra", and Verdi's opera Otello calls for guzla accompaniment in the aria "Dove guardi splendono raggi", but the part is commonly performed on mandolin. Gustav Mahler used the mandolin in his Symphony No. 7, Symphony No. 8 and Das Lied von der Erde. Parts for mandolin are included in works by Schoenberg (Variations op. 31), Stravinsky (Agon), Prokofiev (Romeo and Juliet)
Mandolin that used steel or steel-and-bronze strings. Pasquale Vinaccia (1806–c. 1882), modernized the mandolin, adding features, creating the "Neapolitan" mandolin c. 1835. Pasquale remodeled, raised and extended the fingerboard to 17 frets, introduced stronger wire strings made of high-tension steel and substituted a machine head for the friction tuning pegs, then standard. The new wire strings required that he strengthen the mandolin's body, and he deepened the mandolin's bowl, giving the tonal quality more resonance. He didn't introduce the bent soundboard, as it was present in some of the instruments made by the previous generation for bronze strings. Other luthiers who