Legendary record producer Keith Olsen died on Monday March 9th, according to Blabbermouth. No cause of death has been announced and Olsen's actual age is not known. Olsen is perhaps best known for being the link that connected Lindsey Buckingham and Stevie Nicks to Fleetwood Mac in 1974, having produced the duo's self-titled 1973 Buckingham Nicks collection, which was played to demonstrate the wares of Van Nuys, California's legendary Sound City studio to Mick Fleetwood.

Fleetwood soon snagged the pair for the group and Olsen produced Fleetwood Mac's self-titled 1975 album, which featured such classics as “Say You Love Me,” “Rhiannon,” “Over My Head,” “Monday Morning,” “World Turning,” and “Landslide.”

In addition to Fleetwood Mac, Olsen's resume reads like a who's who of the last 50 years of rock, including recording the Grateful Dead, Eddie Money, the Scorpions, Whitesnake, Foreigner, Jefferson Starship, Heart, Rick Springfield, REO Speedwagon, Emitt Rhodes, Loverboy, Pat Benatar, Joe Walsh, Bad Company, Santana, Sammy Hagar, Kim Carnes, Hall & Oates, .38 Special, Ozzy Osbourne, and many others.