Lee Mark Ranaldo (born February 3, 1956) is an American musician, singer-songwriter, guitarist, writer, visual artist and record producer, best known as a co-founder of the alternative rock band Sonic Youth. In 2004, Rolling Stone ranked Ranaldo at number 33 on its "Greatest Guitarists of All Time" list. In May 2012, Spin published a staff selected top 100 list, ranking Ranaldo and his Sonic Youth bandmate Thurston Moore together at number 1.