[1][2][3] Since 1992, Plas composes and produces also soundtracks for the film and advertising industry at ZOO Productions Company.
This led to more of a hard rock sound, combined with greater maturity and simplicity, culminating in the hit single "Fly" from their 1980 album "New Lines".
In the 1990s, Thierry Plas became a highly appreciated session musician, playing live and recording with Vaya Con Dios, Vladimir Cosma, Pierre Rapsat, Beverly Jo Scott, Billy Preston and other Belgian, French & international artists.
Plas was also a member of The Responsibles with Patrick Riguelle who released one album, "Every Germ is Sacred" (1995) and were chosen as the opening act for Jimmy Page & Robert Plant in Brussels, Rotterdam and Köln.
Other production credits over the years have included Belgium's 1988 Eurovision candidate Joseph Reynaerts, Brandthout, Klaus Klang and Raxola.