Has never been bettered and probably never will.
Off the subject of mob-related films but in the realm of the Great One ( Bertie de Niro) - the film 'The Mission' starring said legend from the 80s has a great soundtrack. The film is a true story about the Portuguese slave trade in the 1700s and the authorities in the newly colonised lands' efforts to destroy a remote Jesuit mission above the Amazon river. De Niro is superb as a slave trader turned jesuit priest who disobeys his head's orders and tries to outgun the colonists ( played by actors with rich, creamy English accents - think Prince Charles in a red coat and white breeches , although not in game hunting pose) with the help of the Indian villagers. Tense stand-off , great music - throw in Jeremy Irons and you've got a bona fide religious classic.