Lady Gaga has apologised for a collaboration with R Kelly following a documentary detailing abuse allegations against him.
Gaga has promised to remove Do What U Want (With My Body), a track she recorded with the R&B star in 2013, from streaming services after condemning the allegations against the singer as "absolutely horrifying and indefensible".
Kelly had not been charged with any offence in relation to the allegations in the documentary Surviving R Kelly. He denies any wrongdoing.
Posting on Twitter, Gaga wrote: "I stand behind these women 100%", believe them, know they are suffering and in pain and feel strongly that their voices should be heard and taken seriously."
She said the collaboration with R Kelly had been made at a "dark time" and with the intention to "create something extremely defiant and provocative".
The track in question, Do What U Want With My Body, was recorded with R Kelly in 2013 and includes the lyrics "You can't have my heart and you won't use my mind, but do what you want with my body."
The pair performed the track together on Saturday Night Live and the American Music Awards, performing a raunchy dance routine.
"I think it's clear how explicitly twisted my thinking was at the time," Gaga said, saying she spoke "as a survivor of sexual assault myself".
"If I could go back and have a talk with my younger self I'd tell her to go through the therapy I have since then, so that I could understand the confused post-traumatic state that I was in."
An official video for the song, shot by Terry Richardson, was made but never released.
Clips posted on unofficial sites show Lady Gaga under only a sheet on an operating table, where she has a sexually suggestive conversation with "Doctor" R Kelly before appearing to go under anaesthetic.
Illinois prosecutor Kim Foxx on Tuesday made a plea for victims of the alleged abuse to come forward following fresh allegations against Kelly.
"There's nothing that can be done to investigate these allegations without the cooperation of both victims and witnesses," she said.
Ms Foxx said she was "sickened" by the allegations in the documentary Surviving R Kelly, which detailed allegations that have followed Kelly through his career and included interviewed with many women.
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In 2008 a jury acquitted the singer of 14 counts of child pornography. Prosecutors argued a video depicted sex acts between him and a 13-year-old girl, but both Kelly and his alleged victim denied it was them in the film.
Meanwhile, Gaga is being tipped for a possible best actress Oscar next month for her role in the Bradley Cooper-directed film A Star Is Born.