The year she turned twelve, she was unanimously awarded the Prix d'honneur at the Léopold Bellan [fr] national competition and a few months later entered first nominated in the Conservatory's higher piano classes of Lucette Descaves.

Her young career was then enriched by numerous engagements in France and abroad (Europe, the United States, Japan) as well as broadcasts in various French and international radio and television stations.

While continuing to work with Nadia Tagrine, she enriched her repertoire through meetings with masters such as György Sebők, Vlado Perlemuter, Manuel Rosenthal, Gaby Casadesus, Lili Kraus, Dmitri Bashkirov and Sulamita Aronovsky.

Other awards will be added to her list of achievements: Married since 1979 to Bertrand Mercier, a Polytechnician engineer and Doctor of Science, she spent 25 years as an international concert performer, mother of four children and teacher.

[9] "Nathalie Béra-Tagrine took the measure of the work (Fantaisie de Schumann) and the mastery from one end to the other, alternating shadow and light, tension and rest with a perfectly controlled sound...".

[12] Edgard Feder - France-Amérique – (New York city) "Nathalie Béra-Tagrine knew not to present the tormented pages of Chopin's 4th ballad only as a skillful virtuoso but to make us suffer the deep truth and recreate them from within.

In 1979, her performance of Beethoven's Piano Concerto No.3 at the Palais des Festivals in Cannes left the audience with an extraordinary impression of technical quality, combined with surprising intelligence, authority and depth.