He studied at the jazz seminar with Steve HOUBEN, Charles LOOS, and Jean-Louis RASSINFOSSE.
He also attended lessons, at the Dworp seminar, with U.S. bassists John CLAYTON and Wilbur LITTLE.
As a freelance musician, he plays straight ahead jazz as well as classical music, studio work, and gives private lessons.
Has a pedagogical responsibility for the "Jeunesses Musicales" (Youth and Music) of the French speaking community in Belgium. He also composes original music
His experience includes :
- Classical music with the Symphony Orchestra of the R.T.B.F (Belgian Radio & Television)
- The Liège Philharmonic
- National Orchestra of Belgium
- Royal Opera of Wallonia
- Versailles Opera
- Chamber Orchestra of Huy
- Guy CABAY, Steve HOUBEN, Robert JEANNE, Charles LOOS Jacques PELZER, Jacques PIROTTON, Jean-Pierre CATOUL, Thierry CROMMEN, Jacques STOTZEM, HELIOTROPE BIG BAND, BADIANE, Alain EVERTS, TAKE IT EASY.
- L'AFFAIRE LOUIS TRIO, Alain BASHUNG, KENT, Marc MORGAN, RENAUD, Claude MAURANE, SOLE DONNA, William SHELLER.
André Klenes won the Roger Vanhaverbeke Bass Trophy 2011