Nanne Grönvall (born Marianne Elisabeth Nordqvist on May 18 1962 in Stockholm) is a Swedish singer-songwriter. She's married to Peter Grönvall, who's the son of ABBA's Benny Andersson. Nanne has participated in the National part of Eurovision Song Contest 8 times, won it once with their group One More Time and ended up in 3:rd place in the international competition. She has, beside her musical career, had her own radiotalkshow and hosted many other radioshows, acted in several theatre and musical-productions, among others she did the leading part of Sweet Charity. She has toured Sweden many times in her own name and also had her own shows in the two biggest cities in Sweden, Stockholm and Gothenburg. She had great success around in Europe together with her group One More Time in the 90s and later on Ritchie Blackmore recorded their hitsong Highland with his group Blackmore's Night.
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.