People.com Crime Kesha's Mom and Lady Gaga Defend Singer After Her 'Billboard' Music Awards Performance Is Canceled Gaga compared Dr. Luke to Ursula in a tweet on Monday By Naja Rayne Published on May 19, 2016 12:40 AM Share Tweet Pin Email Photo: David Tonnessen/Pacific Coast News Days ahead of the Billboard Music Awards, Lady Gaga and Kesha‘s mother Pebe Sebert have come to the singer’s defense on Twitter after finding out that her ongoing legal battle with producer Dr. Luke and his record label Kemosabe Records has barred her from taking the stage. In a series of tweets on Wednesday night, Sebert condemned the legal system for violating Kesha’s constitutional rights by forcing her to gain permission from Luke in order to perform at the awards show. “Does Kesha have the right to pursue her happiness? Or did they only mean that for rich men? Do you think that there is one male singer who could ever be ‘not allowed to sing’ on the Billboard Awards by another man??” she wrote on Twitter. “How much more public abuse does my daughter have to take before someone says ‘Enough is enough!'” Sebert added: “In an office, all the boss has to do is touch a woman’s butt or breast and that’s sexual harassment!! So what is this and where’s the police. Just goes to show you that money can buy anything including legal rulings Wouldn’t it be nice if other artists stood with Kesha and refused to preform (sic) if she is not allowed to sing!” Kesha is currently embroiled in a legal battle with her former producer, whom she claims sexually abused her for years. Dr. Luke has continually denied her allegations, and a New York court dismissed most of the charges in her case against him. Lady Gaga also offered her opinion on the matter Wednesday, tweeting, “Isn’t it strange that it’s legal to own a woman this way? Listen Ursula, we want her voice back. #freeKesha.” On Tuesday, PEOPLE reported the singer wrote a letter to Luke on Monday saying that “the performance wasn’t about him at all.” A source told PEOPLE that “he had a full day to consider, but still wouldn’t allow her to perform.” However, a separate source denied that the statement was ever written and called the letter “an urban myth.” According to Dick Clark productions, “Kesha accepted an invitation to perform on the show and she received written approval from Dr. Luke’s record label, Kemosabe Records,” the production company told PEOPLE in a statement. “Kemosabe subsequently rescinded its approval following a media report on Wednesday, May 11 regarding Kesha’s appearance on the BBMAs. Unfortunately, Kesha and Kemosabe have since been unable to come to an agreement for Kesha to perform on the show.” Kesha has said that she was “very excited” about her tribute to Bob Dylan and had planned to perform a cover of “It Ain’t Me, Babe.” “I just wanted to make clear that this performance was about me honoring one of my favorite songwriters of all time and has never had anything to do with Dr. Luke,” she wrote on Instagram. “I was never going to use a picture of him, speak of him or allude to my legal situation in any way.” The singer is currently embroiled in a legal battle with her former producer, whom she claims sexually abused her for years. Dr. Luke has continually denied her allegations, and a New York court dismissed most of the charges in her case against him. The Billboard Music Awards airs Sunday at 8 p.m. on ABC.