徐太志
Ultramania is the second studio album by Korean musician Seo Taiji. Although it is the second solo album by Seo, some refer to it as his sixth counting the four albums released by Seo Taiji and Boys. The album, with its nu metal sound, has sold over a million copies, making it one of the best-selling albums in South Korea. "Ultramania" spawned three number-one singles, "Ultramania", "Feel the Soul" and "Internet War".