Born and raised in Bennigsen, Hanover, she performed as a member of the children choir Joyful Noise before auditioning for the fifth season of The Voice of Germany in 2015.

[4][5][6] She subsequently signed a recording contract with Universal Music Group; her debut studio album Berlin was released on 29 April 2016 and peaked at number 18 on the GfK Entertainment Charts.

[4] Following Xavier Naidoo's disqualification, Kriewitz was announced as one of the ten finalists for Unser Lied für Stockholm, Germany's preliminary decision for their representative at the Eurovision Song Contest 2016, in 2016.

[17] In 2015, Kriewitz successfully auditioned for the fifth season of The Voice of Germany, singing "The Hanging Tree" by James Newton Howard and Jennifer Lawrence.

[30] denotes a performance that entered the charts  denotes winner 2016 for Kriewitz began with an announcement which presented "Ghost" (2015), previously released as her debut and winner's single, as one of the ten finalists of Unser Lied für Stockholm, the German national competition held in search for their representative in the sixty-first edition of the Eurovision Song Contest.

[7] Prior to the competition, Xavier Naidoo was originally intended to be their representative after an internal selection,[31] although numerous controversies which involved him ultimately resulted in his withdrawal.

[8] The compilation album of the sixty-first edition of the competition titled Eurovision Song Contest: Stockholm 2016, released on 15 and 22 April digitally and physically respectively, featured "Ghost" on its first disk.

[34] Kriewitz's debut studio album titled Berlin, released on 29 April, peaked at number eighteen on the GfK Entertainment Charts.

"[37] Kriewitz was then selected as the cover girl of the Welt Vegan magazine for their June 2016 issue,[38] where it held a raffle for a copy of Berlin for five winners.

[16] During an interview with PETA, Kriewitz explained her perspective on equality of all living things by saying: "The difference between the dog and pork is simply not for me - it is inhumane, animals that cannot defend themselves to abuse.