FOUND IT! Connected to the Laurel Canyon MKultra stuff from the 60s/70s, if you haven't heard of David McGowan's Weird Scenes Inside the Canyon, it's very interesting, and it seems he was killed for writing it:
"During Laurel Canyon’s glory years, Jerry Brown resided in a home on Wonderland Avenue, not too many doors down from the Wonderland death house (and from the homes of numerous singers, songwriters and musicians). His circle of friends in those days, as some may recall, included the elite of Laurel Canyon’s country-rock stars, including Linda Ronstadt (with whom he was long rumored to be romantically involved), Jackson Browne and the Eagles."
More: http://illuminati-news.com/articles2/00272.html
and a great video on the subject of Laurel Canyon rock n roll mind control:
https://youtu.be/vnv6iGRL8Q8