Harlequin is a soundtrack album by American singer-songwriter Lady Gaga, released on September 27, 2024, by Interscope Records. Serving as a companion to the film Joker: Folie à Deux, in which Gaga portrays Harley Quinn, the album features a blend of classic jazz standards and original compositions, reflecting the character's complex psyche. The album includes reimagined versions of songs like "Good Morning," "Get Happy (2024)," and "Smile," showcasing Gaga's versatility and deep connection to jazz music. Notably, it features two original tracks: "Folie à Deux" and "Happy Mistake," the latter of which Gaga discussed in an interview, highlighting its thematic significance. The cover art presents Gaga embodying Harley Quinn, standing under a shower with orange hair, wearing a white dress and a flotation device around her neck, capturing the album's theatrical essence.

Tracklist:

Side A:
A1. Good Morning
A2. Get Happy (2024)
A3. Oh, When The Saints
A4. World On A String
A5. If My Friends Could See Me Now
A6. That's Entertainment
A7. Smile

Side B:
B1. The Joker
B2. Folie à Deux
B3. Gonna Build A Mountain
B4. Close To You
B5. Happy Mistake
B6. That's Life