Producer Phil Spector dies aged 81

US music producer Phil Spector - who transformed pop with his "wall of sound" recordings - has died at the age of 81, while serving a prison sentence for murder. Spector worked with the Beatles, the Righteous Brothers, Beach Boys, Bruce Springsteen, Stevie Wonder, Ike and Tina Turner, producing 20 top 40 hits between 1961 and 1965. In 2009, he was convicted of the 2003 murder of Hollywood actress Lana Clarkson. NPR has an interesting article about his life.