A French municipal library has discovered a musical score handwritten by Wolfgang Amadeus Mozart in its archives, the Nantes town hall said on Thursday.

The one-page work, donated to the town by a private collector at the end of the 19th century, was until recently thought to be a copy rather than an original.

The unpublished score, measuring 16 cm by 29 cm (6.5 by 11.5 inches), is thought to have been written around 1787, according to an expert musicologist from the Mozarteum university in the composer’s native city of Salzburg in Austria.

Read more here: Unknown score written by Mozart found in France