The trailer for Todd Phillips' musical psychological thriller Joker: Folie a Deux, starring Joaquin Phoenix as the titular character and Lady Gaga as Harley Quinn, is finally out. The film has music and dance at its core, which has prompted many users on X to call it “La La Land for insane people." (Also Read – Joker: Folie à Deux trailer – Lady Gaga's Harley Quinn joins Joaquin Phoenix's frenzy. Watch)La La Land gone darkLa La Land is Damien Chazelle's 2016 romantic musical, starring Ryan... Read this story