Charles Koppelman, a veteran music executive whose career spanned five decades before he became a top executive at Martha Stewart and Steve Madden’s companies, died Friday at the age of 82. The news was posted on social media by his son Brian, co-creator and showrunner of the Showtime series “Billions,” and daughter Jenny Koppelman Hutt. No official cause of death was given, but Brian wrote, “He spent his last days surrounded by those he loved the most.”
It is no overstatement to say that Koppelman was one of the most formidable industry executives of the past 50 years. Over the course of his decades in the music business, Koppelman worked with everyone from Barbra Streisand and the Lovin’ Spoonful to Prince and Vanilla Ice.  
https://variety.com/2022/music/news/charles-koppelman-music-executive-dead-martha-stewart-prince-1235442187/