Symphony Symphony, the term is applied to a lengthy form of musical composition for orchestra, usually in four movements. Symphony, sheet music:Symphony No.40 in G minor, K.550 (Wolfgang Amadeus Mozart)Symphony No.103 in E-flat major, Hob.I:103 (Joseph Haydn)SINFONIA № 8 (F Major) – Three Part Invention (J.S. Bach)Share this:Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Telegram (Opens in new window)