Twenty-five years ago this week, John Lennon was murdered by crazed gunman Mark David Chapman outside his home in New York City.

Michael Jackson asked his sister-in-law to warn his nephews of the dangers of child abuse, according to a note found in a collection of the famous family’s memorabilia.

Sony Music chairman and chief executive Tommy Mottola, who was responsible for building the careers of Mariah Carey, Jennifer Lopez and Celine Dion, has announced he is leaving the company to start his own music label.