The Oscar-winning singer stars opposite Joaquin Phoenix in the upcoming sequel as the disturbed lover of his titular Batman villain.

Lady Gaga has recently opened up about her collaboration with fiancé Michael Polansky for her new studio album ‘Harlequin’, which she released on September 27. The album also acts as an intriguing companion for her latest and highly awaited film,

Lady Gaga discussed this subject while explaining how the movie inspired her new album Harlequin, which collects reimagined covers that she and Phoenix sing in Joker, as well as two original songs. The singer-songwriter and star of movies like A Star is Born and House of Gucci started off by telling EW:

Harlequin” is a companion album for the film, in which Gaga stars as Lee, also better known as the unhinged villain Harley Quinn.

Little Monsters, rejoice. Lady Gaga has announced a brand-new album. The record, which arrives this week, is called "Harlequin" and it serves as a companion project to the upcoming film " Joker: Folie à Deux ," in which Gaga co-stars as Harley Quinn alongside Joaquin Phoenix as Arthur Fleck/Joker.

The most daring is on ‘The Joker.’ Michael [Polansky, Gaga’s fiancé] and I wanted to show the defiance of Lee proclaiming that she is the real criminal in all of this,” Gaga told Entertainment Weekly,

Sept. 25 (UPI) -- Lady Gaga announced new music to accompany her upcoming film Joker: Folie à Deux. Harlequin is "a companion" to the Joker sequel starring Joaquin Phoenix . The album drops Sept. 27, and it features 13 songs. Tracks include "If My Friends Could See Me Now," and "Happy Mistake."

Lady Gaga is setting the stage for her starring role in 'Joker: Folie à Deux' with the companion album 'Harlequin.'

Harlequin is a showcase of the many diverse talents offered by one of our very best entertainers. Harlequin Is Lady Gaga’s Masterclass in Musical Storytelling: Review

Lady Gaga’s new “Harlequin” release kicks off with the jazzy, vintage Hollywood classic “Good Morning.” But some of this album was recorded over good nights in Las Vegas. Gaga’s backing band and more than 20 Vegas musicians and singers assembled at Studio at the Palms this past June and July.