Lady Gaga recorded a full companion album to Joker: Folie a Deux – JoBlo.com

Lady Gaga Details Her Harley Quinn Transformation for Joker: Folie à Deux – E! Online  E! NEWSsource

Lady Gaga Reveals Why She Changed Her Singing Voice For ‘Joker: Folie à Deux’  Yahoo Entertainmentsource

Ex-Judge Takes His Own Life Just as FBI Shows Up at His Door  The Daily Beastsource

Lady Gaga Announces Harlequin, Companion Album to Joker: Folie à Deux  imdbsource

Lady Gaga reveals surprise ‘Joker 2’ companion album ‘Harlequin’ is on the way  USA TODAYsource

Lady Gaga Announces ‘Joker 2’ Album ‘Harlequin’ With 13 Songs  imdbsource