As One

As One (Korean: 애즈원) was a South Korean R&B duo 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". The group officially reunited in 2019, and continued to release music until member Lee Min's death in 2025.