Nannes musical career started in the 1980s group "Sound of Music". 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.