text: Rules The contest is organised annually by the European Broadcasting Union (EBU), together with the participating broadcaster of the host country. The event is monitored by an Executive Supervisor appointed by the EBU, and by the Reference Group which represents all participating broadcasters, who are each represented by a nominated Head of Delegation. The current Executive Supervisor is Martin Österdahl, who took over the role from Jon Ola Sand in May 2020. A detailed set of rules is written by the EBU for each contest and approved by the Reference Group. These rules have changed over time, and typically outline, among other points, the eligibility of the competing songs, the format of the contest, and the voting system to be used to determine the winner and how the results will be presented.
  Song eligibility and languages
  All competing songs must have a duration of three minutes or less. This rule applies only to the version performed during the live shows. In order to be considered eligible, competing songs in a given year's contest must not have been released commercially before the first day of September of the previous year. All competing entries must include vocals and lyrics of some kind, a cappella songs and purely instrumental pieces are not allowed. Competing entries may be performed in any language, be that natural or constructed, and participating broadcasters are free to decide the language in which their entry may be performed.