Phil Spector, who pioneered the “Wall of Sound” technique and produced artists like the Beatles, George Harrison and the Ramones, died Saturday at age 81.

The producer was serving a 19-to-life sentence for the 2003 murder of actress Lana Clarkson. He was convicted in 2009.

Spector’s death was confirmed by the California Department of Corrections and Rehabilitation. “California Health Care Facility inmate Phillip Spector was pronounced deceased of natural causes at 6:35 p.m. on Saturday, January 16, 2021, at an outside hospital,” reads a news release. “His official cause of death will be determined by the medical examiner in the San Joaquin County Sheriff’s Office.”

Spector was born Dec. 26, 1939 in the Bronx, and began his career…