Gaga waved to the crowd as the warm applause continued.
Phoenix exited the stage first, and Gaga stayed with Phillips for an extra minute or so.
There are a lot more expectations on a second film.
Lady Gaga and Joaquin Phoenix at the ‘Joker: Folie à Deux’ premiereDaniele Venturelli / WireImage / Marco Bertorello / AFP / Getty Images
If you remember the first film, Arthur has a musicality to him.
He is often dancing to express the way he feels.
And Hildur Gunadottirs score is almost a character in the first film, Phillips said.
Gaga noted she wouldnt actually describeJoker: Folie a Deuxas a musical.
The music is a way to give the characters a way to express themselves because the dialogue wasnt enough.
The previous film had moved her, Gaga explained.
Joker: Folie a Deuxbegins international release on October 2 and goes domestically on October4.