On Wednesday, it was announced that Yasiin Bey, the musician formerly known as Mos Def, would play legendary jazz pianist Thelonious Monk in an upcoming biopic.

However, T.S. Monk — Thelonious Monk’s son and the chairman of the company that runs the Thelonious Monk estate — told Pitchfork less than 24 hours later that the “project and its announcement are totally unauthorized.”

“I hate the script and I control the music in Thelonious’s catalogue,” T.S. Monk said. “There is no involvement by anyone in the Monk family with this project, and we actually condemn the effort.”

In an Instagram video, Bey responded to T.S. Monk’s statement on Thursday: “Let me be clear, if the Monk estate is not happy with it, if Mr. Monk III is not happy with it, then neither am I. To be clear, I was given every indication by the production company that the family was on board. That was one of my primary questions … I took them at their word, and clearly that wasn’t the case.”