When Lady Gaga is not working on the set of Ridley Scott’s upcoming Gucci murder film, House of Gucci (check out some of her best looks from the set of the film so far), she’s responding to a fan campaign that has pushed her 2013 album Artpop to the top of the iTunes charts.

On April 13, #buyARTPOPoniTunes went viral on Twitter as Little Monsters worldwide began campaigning for an ‘Act II’ to the album, which is currently number three in the US charts just after Taylor Swift’s re-release Fearless and DMX’s greatest hits album, The Best of DMX.

Responding to the campaign, Gaga took to social media to say that it “has inspired such a tremendous warmth in (her) heart”.

“Making this album was like heart surgery, I was desperate, in pain, and poured my heart into electronic music that slammed harder than any drug I could find,” she wrote.

“I fell apart after I released this album. Thank you for celebrating something that once felt like destruction,” she added. “We always believed it was ahead of its time. Years later turns out, sometimes, artists know. And so do little monsters. Paws up.”

Last week, DJ White Shadow, who produced many of the songs on the album, revealed he had contacted Gaga about a petition from fans calling for a sequel to the album, which currently has over 39,000 signatures.

“I never been so broken as a human being the day when that record was turned in,” he said of the 2013 album. “At times I felt finished with life. This is not an exaggeration.”

‘Artpop Act II’ was set to contain unheard songs that were intended to follow Artpop, but the project was never released publicly.

Elsewhere, BloodPop, one of the main producers on Lady Gaga’s sixth studio album, Chromatica, has teased a potential remix album in the near future, featuring Rina Sawayama. Responding to a call for Charli XCX to be featured on the song “911” – which premiered alongside a short film in September last year – he added: “Working on it!”