Steen began her career as lead vocalist of pop trio Glashaus who released their self-titled debut album in 2001 and scored the top five hit "Wenn das Liebe ist" the same year.

[1] After her departure from Glashaus, Steen signed a recording contract with Universal Urban and released her second album Darum leben wir in 2009.

It entered the top ten in Germany and was eventually certified gold by the Bundesverband Musikindustrie (BVMI).

[1] Her fourth record, Spiegelbild (2014), overseen by singer Tim Bendzko and musician Christian "Crada" Kalla, was less successful than its predecessors and peaked at number 42 on the German Albums Chart only.

[3] Following the album's commercial failure, Steen rejoined Glashaus in 2016 but also continued performing and recording as a solo artist.