Hot Eyes was the name adopted for international acts by the Danish singing duo known in their home country as Kirsten and Søren. It was formed by Kirsten Siggard (born 7 September 1954 in Slagelse) and Søren Bundgaard (born 4 March 1956 in Glostrup).
Kirsten was brought up in a traditional Christian family who sang in a church choir when she was young and later pursued a career deemed appropriate and desirable, working in a bank, where she met her husband, Jorgen. Søren was a musician, singer and composer, at that time a member of the Danish band Sir Henry. Both Sir Henry and Kirsten entered the Dansk Melodi Grand Prix, which serves as the Danish pre-selection for the Eurovision Song Contest (ESC), in 1983. For some reason, Sir Henry's entry, "Og Livet går" with music composed by Søren and Leif Pedersen was disqualified and Kirsten took their place in the final, but in a somewhat consolation-prize style they sang as backing vocals for Kirsten.
Søren later decided to leave Sir Henry in favor of further cooperation with Kirsten, and the duo entered the Dansk MGP in 1984 as Hot Eyes with the song "Det' lige det" with music by Søren and lyrics by Keld Heick (who also penned lyrics to all other Hot Eyes' Dansk MGP entries). The song became known in Denmark as the "swimming pool song", as at the end of the Dansk MGP performance Kirsten threw Søren into a swimming pool by the stage. They won the contest and therefore represented Denmark at the Eurovision Song Contest 1984, taking the fourth place, even though they were unable to replicate the swimming pool gimmick. This was Denmark's best placing since 1963, when the country's entry won the contest. Kirsten was actually pregnant with her first son while singing at Eurovision.
Riding on their popularity, they went on to win the Dansk MGP again in 1985 with "Sku' du spørg' fra no'en?" - the only ever second win in a row. It was only then that Kirsten decided to give up her work in the bank and embark on a full-time career in entertainment with Hot Eyes. The song was notable for featuring Søren's nine-year-old daughter, Lea Bundgaard, who played a vital role in the performance. This time, however, they took only eleventh place at the ESC.
In 1986 and 1987 Kirsten & Søren entered the Dansk MGP as well, but did not win, coming fourth with "Sig det, som det er" and fifth with "Farvel og Tak" respectively. In the meantime, Kirsten began her theatrical career, appearing in a theatre play as well as musicals such as Chess or Les Misérables.