For another , it ends with Liza Minelli parading through a series of phantasmagoric stage sets singing a pointedly ironic song called Happy Endings--a sequence every bit as dazzling ( and as mystifying ) as the ballet from An American in Paris . Just as Mean Streets is an unparalleled demonstration of the power of film to convey reality , Happy Endings is a celebration of film 's magical ability to create it .
It ends with Minelli singing .