As a seasoned jazz musician, Benjamin Petit is well skilled in the art of impromptu creation. However, there can't be too many purveyors of the improvisatory art form who combine their evening gigging and dates in recording studios with a daytime job involving ferrying people across the world far above the clouds.The 47-year-old French saxophonist is a commercial airline pilot who works on long haul flights for Air France. Thankfully, at some stage, he managed to cut down on his shift so that