Until the 1990s, trot and traditional Korean folk based ballads dominated South Korean popular music. The emergence of the South Korean pop group Seo Taiji and Boys in 1992 marked a turning point for South Korean popular music, also known as K-pop, as the genre modernized itself from incorporating elements of popular musical genres from across the world such as Western popular music, experimental, jazz, gospel, Latin, classical, hip hop, rhythm and blues, electronic dance, reggae, country, folk, and rock on top of its uniquely traditional Korean music roots. Western-style pop, hip hop, rhythm and blues, rock, folk, electronic dance oriented acts have become dominant in the modern South Korean popular music scene, though trot is still enjoyed among older South Koreans. K-pop stars and groups are well known across Asia and have found international fame making millions of dollars in export revenue. Many K-pop acts have also been able to secure a strong overseas following using online social media platforms such as the video sharing website YouTube. South Korean singer PSY became an international sensation when his song "Gangnam Style" topped global music charts in 2012. 