Self taught, he discovers the button instrument in 1996 at St-Chartier and obtain his first accordion one year later. After a short passage in the association "Mascaret", he joins the band "Les Tortues Véloces" in 1999 and discovers the pleasures of the stage as well as to play to make people dancing.

It scoops out its influence in dance rhythms from center of France and from Bretagne but also in improvised musics, word musics, rap, rock...

He makes the band "Zef" in 2001 with Laurent GEOFFROY, join Minuit Guibolles in 2003, makes Travudia in 2004 then Dites 34 in 2006. It's in this one where he approaches in a more concrete way improvisation and concert music playing with several musicians of jazz. In 2009, he creates bands Duo D.C., A Velha Cega, Duo Absynthe, FéO et Jeff Caresse.

Baltazar play violin with an aperture which comes from its meetings, from his trips and from her identity half hungarian. He is interested for emotions with an universal sound language.

He plays also in solo but also in "Vent d'Est", "Duo Cavez-Montanaro", "duo Cremer-Montanaro", "Red Rails, "Cie Montanaro" and various projects of improvised music.

He also played in Travudia, Minuit Guibolles, Red Dog Green Dog, Ric e Fouale, la création "Fest Noças" and Tambourinaires en Compagnie.

Laurent Geoffroy is first marine, in fact he constructs boats. And then on a boat he meets the accordion. Polluted late but seriously, Norbert Pignol says about him that he is a "Madman hungry of the box with buttons".

As he likes petticoats he makes "SOLUNE" with Loïc Pénot, then "ZEF" with AURÉLIEN CLARANBAUX. As he also likes the caïpirinha he plays forro with "CALANGO" and « ZUCO OF FORRO ». As he likes fiesta and friends he plays rock with "JC COMES BACK". Finally, as he likes his west south, he is teacher of diatonic accordion since 2001 in "L'ECOLE NATIONALE DE MUSIQUE ET DANSE DES LANDES".

Lately he really is a part of Landes because he is part of "COUZINS.

Call "Pedro"; he begins violoncello at 8 years old, smashes his bass guitar at 18 !

He scoop out the inspiration from different trainings (jazz, rock, reggae…).

He cooks the best and evaporates the stronger for Zef !

He had played with Nazachodzie, J.C. Comes Back, Solune.