Conception "La det swinge" was written –music and Norwegian lyrics– by
Rolf Løvland. It is a tribute to dancing to old rock 'n' roll heard on the radio. Befitting the subject matter, the song itself is written in an old-fashioned style, with a memorable
saxophone melody starting the song. The melody arrangement is in
retro style, containing elements of contemporary 1980s music and throwbacks to the 1950s. A. Zandra wrote the lyrics for the English version of the song titled "Let It Swing". Pop duo
Bobbysocks! –
Hanne Krogh and
Elisabeth Andreassen– recorded both versions of the song and originally released them in the same single. On 4 May 1985, the Eurovision Song Contest was held at
Scandinavium in
Gothenburg hosted by
Sveriges Television (SVT), and broadcast live throughout the continent. Bobbysocks! performed "La det swinge" thirteenth on the evening, following 's "
Magic Oh Magic" by
Al Bano and Romina Power and preceding the 's "
Love Is" by
Vikki Watson.
Terje Fjærn conducted the event's live orchestra in the performance of the Norwegian entry. This was the second appearance for both Andreasson and Krogh in Eurovision: in Andreassen had represented in the duo
Chips with
Kikki Danielsson, singing "
Dag efter dag"; and in Krogh had finished 17th –second from last– in the contest, with the song "
Lykken er". At the close of voting, it received 123 points, placing first in a field of nineteen, winning the contest. It became Norway's first ever win at the contest. It was succeeded as Norwegian entrant at the by "
Romeo" by
Ketil Stokkan.
Aftermath Andreasson went on to Eurovision on two more occasions – she finished sixth in the , performing a duet with
Jan Werner Danielsen, entitled simply, "
Duett" and in the , she competed as a solo artist with "
I evighet", finishing second to 's "
The Voice" by
Eimear Quinn. Krogh competed in the as part of the group
Just 4 Fun with "
Mrs. Thompson", finishing 17th. On 31 March 2015, Bobbysocks! performed "La det swinge" in the Eurovision sixtieth anniversary concert ''
Eurovision Song Contest's Greatest Hits'' held in London. ==Track listing==