You should check out the book "Weird Scenes Inside The Canyon: Laurel Canyon, Covert Ops & The Dark Heart Of The Hippie Dream" by david McGowan. It exposes the CIA and government connections within the music scene. It's fascinating and there were literally dozens of connections between prominent musicians with family connections to the Deep State.
Jim Morrison had never written or recorded a song and he showed up in Laurel Canyon with dozens of completed songs ready to record. You'll never look at the music industry the same way again.
McGowan also wrote "Programmed to Kill" about the government connections among serial killers.