and chroma key editing, varying the angles of the dancers' bodies constantly. The group sold over 1.5 million copies of the album within a month of its release, and Seo Taiji and Boys won a Golden Disc Award for "Nan Arayo" in 1992. Spin named "Nan Arayo" number 4 on their 2012 list of the 21 Greatest K-Pop Songs of All Time. In 2015, Rolling Stone named it number 36 on its list of the 50 Greatest Boy Band Songs of All Time. "Nan Arayo" is also recognized for establishing the popularity of rap in K-pop and hybridizing the Korean ballad style with rap, rock, and techno. 1993: "Hayeoga" Their 1993 second album took a different turn. Although remaining a mostly dance album, a few songs such as "Hayeoga" (하여가, 何如歌, "Anyhow Song") combined elements of heavy metal and traditional Korean folk music through the use of the taepyeongso, a double-reed wind instrument, and melodic structure. While there was controversy that the guitar solo in the middle of the song plagiarized Testament's "First Strike is Deadly", the guitarist for the solo, Lee Tae-Seop, mentioned in an interview that the solo's arpeggios reinterpreted Scandinavian folk songs, which had no copyright. "Hayeoga" earned them their second Golden Disc Award. Moreover, while promoting the album, the group was banned from appearing on the national television channel KBS-TV because they wore earrings, ripped jeans and had dreadlocks, which ethics committees associated with reggae, resistance movements, and rejection of social norms (although their brightly dyed long hair in 1995 did not attract a similar ban). This was the first of the numerous controversies regarding Seo Taiji and Boys. The band's second album became the first 'double million sellers' album in Korean history. 1994: "Classroom Idea" The third album shifted to a more heavy metal and rock style. Danceable tunes were nearly non-existent except "Dreaming of Bal-Hae" (발해를 꿈꾸며), an alternative rock song indicating a hope of reuniting North and South Korea, which earned the group its third Golden Disc Award. Instead, songs such as the controversial "Classroom Idea" (교실 이데아) with death growl vocals, influenced by bands such as the Beastie Boys and Rage Against the Machine, by Ahn Heung-Chan of Crash took center stage. The song was extremely critical of the Korean education system and the pressure placed on youth to succeed academically, such as doing well on university entrance exams. The song was