His first seven albums were all million sellers. And his all formula album, all 10 albums, had won the main award or the greatest award in the Golden Disk Award. He is the singer who had been at the top the most times in Korea's 1990s. And he is also a composer. He composed all his albums' title songs, and he is the composer who composed the song which had been at the top the most times. And his accumulated album sales is fifteen million. He is still actively performing and working today.