1992 of the comprehensive On Record series sees the rise of the grunge movement (Nirvana's Nevermind) and the continued emergence of hip-hop, plus controversial recordings (from Ice-T's "Cop Killer" to Madonna's Erotica) and the performances at MTV's Unplugged. Also the year in country (the first No. 1s for Wynonna, Collin Raye and Tracy Lawrence) and heavy metal, even subgenres such as shoegaze and riotgrrrl.