A Grammy Award-winning musician is accused of offering to help women get their music careers on track, only to pursue them sexually and, in some cases, retaliate when they rebuffed his advances.

The New York Times details allegations against Ryan Adams from multiple women in an in-depth story published Wednesday. Among the women quoted in the story is actress and singer Mandy Moore, Adams’ ex-wife. Moore says Adams was abusive throughout their marriage, which ended in divorce in 2016.

A 20-year-old female musician says Adams had inappropriate conversations with her when she was 15 and 16 years old, including exposing himself during a video call.

The Times cites two female singer-songwriters, who declined to be identified for fear of retribution, who described a pattern of behavior from Adams that The Times says included “raving about their work and offering tour spots amid aggressive romantic pursuit, followed by harassing messages and threats of professional retaliation when the relationships did not progress as he wanted.”

Adams responded on Twitter after the article was published, writing: “I am not a perfect man and I have made many mistakes. To anyone I have ever hurt, however unintentionally, I apologize deeply and unreservedly. But the picture that this article paints is upsettingly inaccurate. Some of its details are misrepresented; some are exaggerated; some are outright false. I would never have inappropriate interactions with someone I thought was underage. Period.”

The paper quotes Andrew B. Brettler, a lawyer for Adams, saying: “Mr. Adams unequivocally denies that he ever engaged in inappropriate online sexual communications with someone he knew was underage.”