Phil Spector croaked in prison at the age of 80.
https://www.cnn.com/2021/01/17/enter...ath/index.html
Spector was an innovative musical genius in the '60s, who created the "Wall of Sound" production technique, which was highly successful at the time. "Da Doo Ron Ron" was an example of a song produced with this technique, in 1963:
Spector unfortunately was a complete nutcase, who was known for pointing guns at people's heads, and frequently acting erratic. Finally he ended up killing actress Lana Clarkson in 2003, and was convicted for the crime. He died in prison on January 16.