Having Advanced Training Diplomas in Onde Martenot and Musical Acoustics, both obtained in 2002 at the Paris Conservatoire, Nadia is dedicated to chamber music and the performing arts.

In 2006 she co-founded the 3D Trio with soprano Virginie Colette and guitarist Sophie Marechal, with whom she has premièred numerous compositions for this ensemble (Régis Campo, Frédérick Martin, Jean-Marc Chouvel, Colin Roche). She collaborated with the Italian pianist Matteo Ramon Arevalos on the program Messiaen around Messiaen, dedicated to Messiaen and his students, and released on CD for the English RER label Megacorp in 2008, following a tribute tour that year (Angelica FestivalCurva MinoreRavenna FestivalArea Sismica). Contemporary ensemble works include Volta, comprising 2 ondes, electric guitar and percussion, and is a group that has been navigating between rock and contemporary music since 2012.


Nadia also works :

with Judith Depaule’s company, Mabel Octobre, in Paris (You dream - Yuri did it cosmic spectacle, 2007 - Not Even Dead, a multimedia show for children, for which Nadia composed the score in 2010 - The Cosmic Voyage, 2011);


with the ensemble from Valenciennes, Art Zoyd (The Man with a Camera in 2007 - Half Asleep Already, 2011 - Three Dreams Not Valid, 2013 - Vampyr, 2014 - 44 ans 1/2, 2015 - Voyage dans la Lune, 2016 - Forêt de Samplers, 2020). 


Other, more specific projects:

- Sweet Dreams, a show of German and Swiss choreographers Isabelle Schad and Simone Aughterlony, for which she co-wrote the music with Laurent Dailleau, 2009 (2010 Tour including Rotterdam Lantaren/VensterHAU BerlinWien TanzquartierGessnerallee Zürich)

- Between 2'0" involving the Trio 3D, with composers André Serre-Milan and Tao Yu, 2013 

- Solo invitations: Festival l'Arsenale, Italie 2015, Sydney Glebe Justice CenterCanberra International Music FestivalMelbourne Recital Center, Australie 2016 and Music@VillaRomana, Italie 2016, Hindgfestival, Denmark 2017, Musiques Libres, Besançon 2017, MOFO Tasmania Australie 2017


Nadia developed a solo program of electronic wave and inaugurated in September 2012 in City Sonic Festival (Mons, Belgium) with a re-interpretation of Solo für mit Melodie-Instrument Rückkopplung (1965-1966) by Karlheinz Stockhausen, recreated for Ondes Martenot and patch Max MSP (developed by Carl Faia, live sound designer, in the Art Zoyd studios). Premiered in November 2015 at the Consortium in Dijon, has toured in la Semaine du Son à Châlons-sur-Saone in Jan 2016, Festival Electron in Geneva in March 2016, Espace Gantner in Montbéliard in April 2016, Festival Confluences in Paris in April 2016, Copenhagen Avant-Garde music festival in Denmark in June 2016, Gävle Theater in Sweden in December 2016, with a new piece by Li-Ying Wu premiered in June 2016 in Copenhagen. This recital expanded with new commissions to Zeena Parkins (commissioned by Césaré and Huddersfield), Sarah Wery (commissioned by Ars Musica) and Nicola Sani (commissioned by Ars Musica) premiered during Fall 2018, Matt Collins premiered during Winter 2019.


She continues to premiere new pieces as performer : in Flamboyer, concerto for double percussion and orchestra, by the Taiwanese-Danish composer Li-Ying Wu, Nadia played the onde Martenot obbligata in the Danish National Symphony Orchestra, under the baton of Maestra Alondra Della Parra (April 2023). She will be performing Grégoire Lorieux's new piece for the Arditti quartet and herself commissioned by Festival Présence in 2025.


For 2022/2023 and 2023/2024, Ratsimandrey will be Associate Composer of Les Scènes Croisées de Lozère - Scène Conventionnée.


Nadia was Professor of Ondes & Synthesizers at the Regional Conservatoire of Boulogne-Billancourt between January 2015 and Septembre 2022.


Since Septembre 2021, Nadia has been co-directing with Annabelle Playe, AnA Compagnie - accompanied by Full Rhizome, a cooperative society of collective interest.