Then as a teenager he began his professional career with the rock band Hoax. This experience prepared him for his musical trip to the United States where he played with many Los Angeles rock bands, including Ahmet Zappa.
Upon his return to France, Greg toured with many top international artists such as Jay Jay Johanson, Modjo, Kid Loco, and Curtis.
After settling down to record in studio, Greg has hit the road once again after joining the French rock band No One Is Innocent. The band is currently on a tour throughout Europe and Canada, and is preparing the release of their live album and DVD.