According to Eurovision rules, all nations with the exceptions of the host country and the "Big Five" (France, Germany, Italy, Spain, and the United Kingdom) are required to qualify from one of two semi-finals in order to compete in the final; the top ten countries from each semi-final progress to the final. The European Broadcasting Union (EBU) split up the competing countries into six different pots based on voting patterns from previous contests, with countries with favourable voting histories put into the same pot. The semi-final allocation draw held for the Eurovision Song Contest 2020 on 28 January 2020 was used for the 2021 contest, which Denmark was placed into the second semi-final, to be held on 20 May 2021, and was scheduled to perform in the second half of the show.
