The trio participated twice in the Swedish Eurovision Song Contest selections, Melodifestivalen, finishing fourth both times; in 1986 with "Eldorado" and in 1987 with "Alexandra".

Over the following ten years, she established herself as a songwriter in Melodifestivalen, writing two songs for the 1992 competition and the 1995 runner-up "Det vackraste" ("The Most Beautiful Thing") performed by Cecilia Vennersten.

She participated in the United Kingdom's Song for Europe selection for Eurovision in 2001 and finished fourth (last) with "Men", written by Kimberley Rew of Katrina and the Waves.

In 2005, Nanne made her sixth appearance as a performer at Melodifestivalen, singing a song co-written with Ingela 'Pling' Forsman.

Even though it was initially rejected by the jury selecting the entries, "Håll om mig" ("Embrace me") was chosen as a wildcard for the competition, due to the lack of female songwriters participating.

The song finished a disappointing third with the regional juries, but won the national televote by a surprisingly huge margin, scoring a total of 209 points.

Nanne entered Melodifestivalen again in 2007 with the song "Jag måste kyssa dig" ("I Must Kiss You"), written by herself and Ingela 'Pling' Forsman.

She has also dubbed a lot of cartoon movies and TV-series as well as the leading role in "Månsaråttan", a Swedish Christmas daily calendar radio play 2015.

The song "Highland" with her former group One More Time, entered the charts all around in Europe 1994 and also sold gold in South Africa.

In 1995, Peter Grönvall, Nanne and Maria Rådsten wrote the song "Det vackraste", performed by Cecilia Vennersten.