Amber Josephine Liu (born September 18, 1992), known professionally as Amber or Amber Liu, is an American singer, rapper, songwriter.
She debuted as a member of the South Korean girl group f(x) in September 2009.
In 2015, Amber became the first f(x) member to make a solo debut with the release of her first extended play Beautiful and has since further released solo singles.
In July 2018, Amber joined Steel Wool Entertainment following her Korea label SM Entertainment joint partnership with Steel Wool to manages her US activities.
She later released her maxi singles White Noise + Lost At Sea in September 2018 and Countdown + Beautiful in November 2018.
In September 2019, she left SM Entertainment and exclusively signed with Steel Wool Entertainment prior to the release of her 2020 extended play X.