H.O.T. (band)
In September 1999, H.O.T. released their fourth album. It had the title I Yah!. The title track is about a 1999 fire that killed kindergarten students at the Sealand Youth Training Center in South Korea. The album sold more than 1.3 million copies. That month, H.O.T. also became the first K-pop group to perform at the Seoul Olympic Stadium.