At the age of 14, she signed with Universal and started working on her debut album, This Is Maine, which was produced by Hubert Molander. The first single, "Boy Like You", a song co-written by the American popular singer and songwriter Kesha, was released in August 2010. Charlee participated in the Austrian selection for the Eurovision Song Contest 2011, where she sang the song "Good To Be Bad" (her second single) and finished in eighth place.
Later in 2011, she released her third single, "Obvious".
On 29 April 2011, Charlee released her debut album, This Is Maine.
She took part in a German casting show called The Voice of Germany, but was eliminated in the "Battles". On 24 December 2011, Charlee released an European Parliament called This Is Now, which could be downloaded for free on her homepage.