John Phillips also known as Papa John, a musician member of the group called The Mamas and the Papas.
According the entry from Wikipedia, John Phillips longed for success in music industry and I supposed didn't make it.
As for his personal background, he had married four women namely Susan Adams, Michelle Gilliam, Geneviève Waïte and finally Michelle Phillips.
In 1973, despite by the encouragement given by Mick Jagger of the Rolling Stones to record for a new album, he failed Jagger because of his drug addiction.
What really alarming with his life is the revelation of his daughter MacKenzie Phillips that she slept with him. He even introduces cocaine to Mackenzie. Mackenzie also reveals to Oprah that there was the time that she woke up having s*x with his father John.
His story is not really new to us. Hollywood artists or even local ones tend to get married not just once but as many as they can have. Also, drug addiction is often associated with having a lot of problems this is what I see from John Phillips. You see, in life not everything that you thought a solution is really a solution.
You may also be interested in reading Susan Adams mother of Mackenzie Phillips