It used to be that soundtracks were the place for specially commissioned musical scores, the classical sounding epics of John Williams, or the spaghetti sounds of Sergio Morricone. But then, somewhere in the late 1960s, film producers cottoned on to the use of regular mainstream tunes, to complement the themes, era and tone of their movies. Starting with classics like The Graduate and Easy Rider, it has now become the norm. So, here is a playlist with representatives of ten g