Nena is huge in her home country of Germany and since the release of her self-titled debut album - which achieved 6x Platinum in Germany - she has released another 23 albums including compilations and live albums.
99 Red Balloons (the English version of 99 Luftballons which was a big hit across Europe and also on the Billboard Hot 100) is about the toy balloons floating into the air from West to Communistic East Germany triggering an apocalyptic over-reaction by the military. To those of us still at school it was just a catchy pop song that was great for dancing to at the school disco - it was also played a lot on the Youth Club jukebox!
In the UK, the song knocked Frankie's Relax from the top spot on 3rd March 1984 and stayed there for three weeks.
Nena as a band split-up during 1987, but the name was used by their lead singer, Gabriele Kerner, for her solo career which has been very successful in Germany and Austria.