, the potential title of the sequel to 2019's Joker, might not be what we are expecting.

Just a week after the film's director, Todd Phillips teased that the follow-up to the award-winning comedy/drama is officially in the works, some interesting rumors surfaced about the film. In particular, The Hollywood Reporter claims that Joker 2 will be a musical with Lady Gaga set to star as Harlene Quinzel, better known as Harley Quinn.

From the word itself, Folie à Deux is a psychiatric term describing two individuals with a shared psychosis. If we believe the report, the two individuals concerned appear to be Joker and his pumpkin, Harley.

As interesting as this is, it's not final yet. THR added that Joaquin Phoenix still hasn't signed on to come back and his return is still under negotiation. We highly doubt Lady Gaga will join Joker 2 before Phoenix has made his return as Arthur Fleck official.