Joker: Folie a Deux, the sequel to Todd Phillips' hit film, has prompted fierce debate with its twist ending. Fans speculate if a tribute to Heath Ledger’s Joker is present, as Arthur Fleck's tale takes a dark turn in Arkham Asylum.

In developing the ‘Joker’ sequel, director Todd Phillips said the team “just found ourselves writing more and more music into it”

"Well, I know what I'm going to be showing him later. That's so cool, thanks for showing me that," the singer said.