As One (Korean: 애즈원) is a South Korean R&B girl group consisting of Korean-American singers Lee Min and Crystal. The group debuted in 1999 with the album Day by Day, and released five more albums before announcing their hiatus from the music industry in 2017 with the single, "Goodbye for Now".

Lee Dong-hae, referred to as Donghae, is a South Korean singer, songwriter, composer and actor. He became a trainee under SM Entertainment after winning a prize at SM's Youth Best Contest in 2001. After four years of training, Donghae debuted as a member of boy group Super Junior in November 2005. In July 2023, Lee left SM Entertainment, although he remains as a member of Super Junior. Two months later, Lee along with Eunhyuk founded new label ODE.ent to managed his solo activities as well as D&E's activities and he also charges as a Co-CEO of the label.