During the 1980s and early 90s she worked with several groups, such as Poul Krebs & The Bookhouse Boys, Hobo-Ekspressen, and Sweet Intentions.

[4] In 1982, Nanna made her debut with her single Om lidt så lægger jeg dig ned.

[9][10] In 1985, Nanna won a competition organized by the Danish Red Cross to write a song in connection with the relief effort for 1983–1985 famine in Ethiopia, which also affected Eritrea.

[14] Fannys hjerte received praise in the media for breaking free from predictable pop cliches, and finding a personal style.

In the memoir, she opened up about her experiences with crippling stage fright, depression, and anxiety as a result of her rise to fame at such a young age.

[1] Nanna dated musician and producer Hilmer Hassig in the early 2000s, though their relationship was not revealed until after he died in a car accident in 2008.