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.

Five years after "Joker" hit theaters and smashed records to become one of the most successful comic book films of all time, its sequel is finally here. Now in theaters, starring Joaquin Phoenix and directed by Todd Phillips,