Allegro maestoso, from Sonata No. 4 in B-flat major, Op. 65, no. 4 -- Felix Mendelssohn (1809-1847) -- in B-flat major Title: Allegro maestosoExcerpted from: Sonata No. 4 in B-flat majorOpus No.: Allegro maestosoComposer(s): Felix Mendelssohn (1809-1847)