Iceland participated in the Eurovision Song Contest 2021 in Rotterdam, Netherlands. Icelandic broadcaster Ríkisútvarpið (RÚV) chose Daði og Gagnamagnið to represent the nation with the song "10 Years", written by Daði Freyr Pétursson. Daði og Gagnamagnið were due to compete in the 2020 contest with "Think About Things" before the event's eventual cancellation, having won the 2020 edition of Iceland's national selection Söngvakeppnin. For the 2021 contest, RÚV decided to continue its association with Daði og Gagnamagnið, with the group's 2021 entry being selected internally and as such, no edition of Söngvakeppnin was organised for 2021.

Daði Freyr Pétursson, known professionally as Daði Freyr or simply Daði, is an Icelandic musician living in Berlin, Germany. As the frontman of Daði & Gagnamagnið, he was due to represent Iceland in the Eurovision Song Contest 2020 with the song "Think About Things", before the event was cancelled in response to the COVID-19 pandemic. Instead, he represented Iceland in the Eurovision Song Contest 2021 with the song "10 Years", finishing in fourth place. He performed a cover of Atomic Kitten's "Whole Again" during the intermission of the 2023 competition.