 Blondie's 1981 single, "Rapture", was one of the first songs featuring rap to top the U.S. "Billboard" Hot 100 chart.Old school rap (1979–84) was "easily identified by its relatively simple raps" according to AllMusic, "the emphasis was not on lyrical technique, but simply on good times", one notable exception being Melle Mel, who set the way for future rappers through his socio-political content and creative wordplay.Golden age hip hop (the mid-1980s to early '90s) was the time period where hip-hop lyricism went through its most drastic transformation – writer William Jelani Cobb says "in these golden years, a critical mass of mic prodigies were literally creating themselves and their art form at the same time" and Allmusic writes, "rhymers like PE's Chuck D, Big Daddy Kane, KRS-One, and Rakim basically invented the complex wordplay and lyrical kung-fu of later hip-hop".