Sébastien Wonner studied harpsichord and basso continuo with Aline Zylberajch and Martin Gester at the Strasbourg Conservatory. As an organist, he studied with Raphaële Garreau de Labarre, André Stricker and Christophe Mantoux. His interest in improvisation led him to work with Freddy Eichelberger as a mentor. He has also received lessons from Pierre Hantaï.

His musical tastes have frequently led him to repertoire from the sixteenth and seventeenth centuries and vocal repertoire, often collaborating with ensembles such as La Chapelle Rhénane, Doulce Mémoire, La Rêveuse, L’Ensemble Clément Janequin, Consonance, Les Witches, Les Sacqueboutiers and Akâdemia. With these ensembles he has made numerous recordings: H. Schütz’s Symphoniae sacrae, Magnificat d’Uppsala, Musikalische Exequien, and Weihnachtshistorie, S. Capricornus’ Motets, Buxtehude’s Membra Jesu Nostri, Sonatas and Cantatas, P. Verdelot’s Dolci Affetti and Madrigaux, as well as Heureux qui comme Ulysse incorporating texts by J. du Bellay, the Saint John Passion by J.S. Bach, Haendel’s Messiah, the Manuscrit de Suzanne van Soldt, and La Morte d’Orfeo by S. Landi on the labels K617, Alpha, Zig-Zag Territoire (Outhere), Mirare, and Ricercar. His recording of solo harpsichord works by J.P. Sweelinck has been received with critical acclaim. As a soloist and a chamber musician, he seeks diversity in his musical experiences, playing a variety of keyboard instruments (including historical organs and clavichord), pursuing forgotten repertoire, and using improvisation.

While his performances have allowed him to travel to the Americas, Japan, and many European countries, Sébastien is a passionate professor of harpsichord at the conservatory of music (Conservatoire à Rayonnement Régional) in Tours, France, where he is currently Head of the Early Music department.