Sommartider was released in 1982 by Swedish pop band Gyllene Tider, fronted by Per Gessle, and taken from the album Puls. Written as a light summer single, it became one of Sweden's most enduring seasonal hits, returning to radio and playlists every year when the weather turns warm. The hej hej chorus made it especially easy to remember and quote. Online, the short chorus clip spread on soundboards as a ready-made summer cue, used far beyond Sweden by creators who need instant holiday mood.