 Officially debuting on November 21, 1999, he released the album "Day by Day" alongside fellow member Brian Joo.Hwanhee debuted as an actor in 2006, when he starred alongside Seo Ji-hye , Ji Hyun-woo and Kim Ok-bin in Korean drama "Over the Rainbow" as cocky rock star Rex.The rating of the show was mediocre throughout its airing, plummeting to 7% at one point.