Heptone celebrates its 12th anniversary “Heptone Colours” :  Feb 15 at 8:30pm & Feb 16 at 5pm heptone   Heptone Colours (EN) Olivier Collette: piano and arrangements (Steve Houben, Bert Joris, Peter Hertmans, Philippe Aerts,…) Sal La Rocca: double bass (Vaya Con Dios, Steve Grossman, Toots Thielemans…) Bilou Doneux: drums (Nathalie Loriers, Michel Herr, Toots