In 1980, Kurtis Blow released his self-titled debut album featuring the single "The Breaks", which became the first certified gold rap song. In 1982, Afrika Bambaataa and the Soulsonic Force released the electro-funk track "Planet Rock". Instead of simply rapping over disco beats, Bambaataa and producer Arthur Baker created an electronic sound using the Roland TR-808 drum machine and sampling from Kraftwerk. "Planet Rock" is widely regarded as a turning point; fusing electro with hip hop, it was "like a light being switched on," resulting in a new genre. The track also helped popularize the 808, which became a cornerstone of hip hop music; "Wired" and "Slate" both described the machine as hip hop's equivalent to the Fender Stratocaster, which had dramatically influenced the development of rock music. Released in 1986, Licensed to Ill by the Beastie Boys became the first rap LP to top the Billboard album chart.