Martin O'Sullivan trained as a violinist at the Dublin Music Conservatory and played in the Irish National Youth Orchestra. He is also a singer. From 1999 to 2011, he taught music at the Caves à Musique in Tergnier in the Aisne and again from 2005 to 2011.
He was a member of the bands Etats d'Ames and Mouches du Dragon.
He is currently a member of the APEM 24 Symphony Orchestra in the Dordogne and runs a music workshop at the Collège Anne Frank in Périgueux.
Were we to define his "style" of music, it would be a blend of manouche, tzigane (gypsy), klezmer, not to mention traditional Irish music and classical music. He transports us to some very unique places.
He has recorded a number of albums with the following artists: Sam, Wendy Nazaré, Amélie Morin, Dimitri.Nirman, Pascal Escoyez, Marc Bienne, Paryzyane, MaEva.