Previously Unknown Mozart Composition Discovered in German Library

The 12-minute string trio piece, likely written during Mozart's teenage years, will debut in Leipzig on Saturday.

The piece, titled 'Ganz kleine Nachtmusik,' was found in Leipzig's municipal library during the compilation of the latest Köchel catalogue.
The manuscript is believed to be a copy made around 1780, not an original by Mozart himself.
The composition, consisting of seven miniature movements, was performed for the first time in Salzburg on Thursday.
Researchers suggest the piece may have been preserved by Mozart's sister as a memento.
Mozart, a prolific composer who died in 1791, has had several previously unknown works discovered posthumously.