Mozart's A major piano sonata K331 manuscript found

The head of the Hungarian National Szechenyi Library's music collection has stumbled across a rare discovery.

As he looked through a folder of unidentified music scores, among the many copies and unremarkable scores he suddenly noticed a page that made his heart jump.

The four-page score looked like the original Piano Sonata in A Major, K.331, one of the most well-known sonatas of Wolfgang Amadeus Mozart.

Mikusi cross-checked his finding with Mozart experts, and says they confirmed his discovery.