One detail in a 248-year-old notebook changed everything for music historians

Nearly two and a half centuries after it was written, a small notebook kept in the National Library of France has revealed an extraordinary musical secret. It first appeared to be an anonymous manuscript but turned out to contain the unmistakable handwriting of Wolfgang Amadeus Mozart. The discovery has given musicians and historians a rare opportunity to hear previously unknown compositions for the very first time, as per a report by Smithsonian Magazine.

How did a 248-year-old notebook change everything?

A routine examination of old musical documents has led to one of the most remarkable classical music discoveries in recent decades. Inside a modest 44-page notebook resting among anonymous manuscripts at the National Library of France, curators uncovered what experts now agree is authentic handwriting by Wolfgang Amadeus Mozart.

The finding has thrilled musicians, historians, and music lovers alike. More importantly, it has brought seven previously unheard compositions for flute and harp into public view for the first time since they were written in 1778.

How was Mozart's handwriting recognized?

The discovery began earlier this year when curator François-Pierre Goy reviewed a collection of roughly twenty unidentified manuscripts. As he turned the pages, something immediately caught his attention. The musical notation looked strikingly familiar.

According to Le Monde's Marie-Aude Roux, Goy had recently been studying Mozart manuscripts, which helped him identify distinctive characteristics in the notebook.

“I recognized Mozart’s handwriting, his way of drawing braces, the rounded treble clefs leaning forward, the double final bars with fermatas above and below,” Goy explained, as per a report by Smithsonian Magazine.


Believing the find could be significant, he consulted Laurence Decobert, a musicologist at the National Library of France who curated a major Mozart exhibition in 2017. She agreed that the writing closely matched the composer's known work.

The manuscript was later examined by Armin Brinzing, director of the Mozart Library at the Mozarteum Foundation in Salzburg, home to hundreds of Mozart documents and letters.

After personally reviewing the notebook in Paris, Brinzing reached a clear conclusion.

“It is very clear that it is Mozart’s handwriting,” he told the New York Times’ Jeffrey Arlo Brown. “This is the most important Mozart discovery in decades.”

Who created these forgotten pieces?

Experts now believe the notebook records a series of lessons Mozart conducted in Paris during 1778. At the time, the 22-year-old composer had relocated from Salzburg in hopes of advancing his career. The Duke of Guînes, an accomplished flutist and favorite of Marie Antoinette, hired Mozart to teach his daughter, Marie-Louise-Philippine de Bonnières de Guînes.

The duke hoped his daughter, already a gifted harpist, would also develop into a composer. He envisioned music that father and daughter could perform together.

The seven works found in the notebook appear to be collaborative creations produced during those lessons.

Mozart admired his student's skill with the harp, though his private correspondence reveals deep doubts about her compositional abilities.

Writing to his father in May 1778, shortly after their fourth lesson, he remarked, “She has no ideas, and none seem likely to come. I have tried her in every possible way.”

He described giving her a simple minuet to vary and later encouraging her to compose an original melody, as per a report by Smithsonian magazine.

According to Mozart, the process proved difficult. “I told her she must try to originate something herself—only the treble of a melody. So she thought it over for a whole quarter of an hour, and nothing came.”

His father responded with similar skepticism, asking, “Do you think everyone has your genius?” By July, Mozart's frustrations had grown stronger. “She will never be a composer,” he complained. “All labor is vain with her, for she is not only vastly stupid, but also vastly lazy.”

Soon afterward, de Guînes became engaged, bringing the lessons to an end. Yet the rediscovered notebook presents a more nuanced story, preserving the musical exchanges that occurred between teacher and student.

Why is this Mozart's handwriting discovery so important?

For performers, the significance is immense. Earlier this month, harpist Nicolas Tulliez and flutist Mathilde Caldérini of Radio France's Philharmonic Orchestra received copies of the newly identified compositions. They quietly gathered at Radio France headquarters in Paris to rehearse the pieces before their public debut.

Following the National Library of France's announcement on June 19, the works were performed and broadcast just three days later. For scholars, the manuscript offers something equally valuable: a direct window into Mozart's teaching process.

Brinzing told the New York Times that researchers can now follow the lessons “basically bar by bar.”

“What did she write? What did Mozart correct?” he asked. The discovery arrives only a year after another long-lost Mozart composition surfaced at Leipzig Municipal Libraries in Germany, further demonstrating that surprises may still exist within the composer's vast legacy.

According to Agence France-Presse, the find is especially meaningful for flute and harp musicians because Mozart left behind relatively little music for either instrument. Out of more than 600 compositions, only a small number feature them prominently.

Ironically, Mozart himself once referred to the flute as “an instrument that I cannot stand.”



The notebook itself survived turbulent history. Library officials believe it remained among musical materials confiscated from the Duke of Guînes' estate during the Reign of Terror in the 1790s, preserving the pages for future generations. Today, nearly 250 years after those lessons in Paris, audiences can finally hear music that had remained silent for centuries.

FAQs

Who discovered the manuscript?
Curator François-Pierre Goy recognized Mozart’s distinctive handwriting while examining anonymous documents.

When were the newly identified pieces performed?
They debuted publicly three days after the National Library of France announced the discovery on June 19.