For most musicians, a long-lost song written in their teenage years would be of interest only to serious fans — and even then, probably more for biographical reasons than as a standalone piece of work. But that’s hardly the case for Wolfgang Amadeus Mozart, who was composing advanced music at the age of five, and indeed completed the first act of his short life by adolescence. Hence the guaranteed appreciative audience for Serenade in C, a hitherto unknown piece recently discovered in the holdings of Germany’s Leipzig Municipal Libraries and first performed for the public just last week.

“Library researchers were compiling an edition of the Köchel catalog, a comprehensive archive of Mozart’s work, when they stumbled across a mysterious bound manuscript containing a handwritten composition in brown ink,” writes Smithsonian.com’s Sonja Anderson.

Source: Watch the Performance of a Mozart Composition That Had Been Lost for Centuries | Open Culture