"Joker: Folie à Deux" is dancing into theaters today. The highly anticipated sequel, which returns Joaquin Phoenix to the grimy world of Gotham City and adds Lady Gaga as his Harley Quinn ...

Lady Gaga is revealing how she changed her singing voice for her version of Harley Quinn (aka Lee) in Joker: Folie À Deux ... as opposed to breaking into song for no conceivable reason?" ...