ya he sang but not heavy metal . he wrote a song that the beach boys recorded called never learn not to love that they renamed and changed some words charlie called it cease to exist.some say this is what caused the murders and the early demise of Dennis Wilson as he blamed himself for what happened .
[ame="https://www.youtube.com/watch?v=cmtM8PaZgag"]"Never Learn Not to Love" by The Beach Boys - Charles Manson song - YouTube[/ame]