Phil Spector left behind a number of things he'll be remembered for.
For most people who follow music, the first would be the Wall of Sound. The Wall of Sound method is in itself an interesting study. Wikipedia enlightens us: combine and discretely mix acoustic, electric and ninstruments poreviuously unconventional in rock music so they sound as if they are a single instrument to provide a fuller tone: a wall of sound.
There are of course, the many musicians who he produced - despite his mostly unproductive last 30 years. This first 30 years included production credits with Ike and Tina Turner, the Ronettes and the Beatles.
What most of us don't know (or choose not to) is his demise in prison serving a 19 year murder sentence. Maybe a murder conviction is not so outrageous for a man who lived what was essentially an outrageous life: an immigrant family, mother working as a seamstress after his father's suicide, a move to LA where he began to immerse himself in music.
Also known for his in-house Wrecking Crew band of LA session musicians who played on hundreds of hits in the 60s and 70s - backing anything from the Monkees to Cher to Bing Crosby. A side trip into members of the band is an education in itself (Barney Kessel, Dr John, Leon Russell, Jim Keltner, Glen Campbell and many more)
The Lana Clarkson murder in 2003 put him in prion for the rest of his life (he died in prison this past year). The evidence and circumstances were not very clear but the jury convicted him - after several trials- of second degree murder.
As an aside, Spector's Wall of Sound is not to be confused with the Grateful Dead's wall of the same name: a wall created literally by a wall of equipment (amps and speakers) that was devised by Owsley Stanley.
