Sebastion is the holder of the "Diploma of Jazz State",  First prize winner at the" Conservatory of Marseille" and also a graduate of  "I.M.F.P. " 
He began his career in dance halls and piano bars as a teenager, then moved on to Jazz and Latin music. 
Further collaboration with many artists followed including :  Martine Kamoun, Louis Martinez, Philippe Renault, Andy Emler, Philipe Petrucciani, Francesco Castellani, Jean-Michel Cabrol, Laure Donnat, Lilian Bencini, Frédéric Pasqua, Gérard Guerin Group, La Guagua, Stromboli salsa, Tony Carreira and many others.

He has been the Coordinator of the Department of Jazz/Current Music at the Conservatory of Grand Narbonne since 2001 and now  shares his professional activity between teaching, concerts and composition.