- The singer must have the nationality or be a citizen of the represented country (exception for small countries). In case of a duo, one of the singers must have the nationality or be a citizen of the represented country. For bands, it's the recognized nationality of the whole band that matters.
- The song must have been released as a single or on an album between 2017 and 2021 and must be available on an official CD or legal digital platforms (both streaming or music store) . Note that a song (or a version of the song) that has only been released on YouTube is not eligible to take part.
- It must be an original song performed in its studio version. Live versions and covers are not allowed. Remixes or new versions are allowed as long as the original song has not been released before 2017 and that they are still performed by the original singer who must be a native of the country you play for.
- Songs that took (or are going to take) part in WSC, Eurovision Song Contest, National selections for Eurovision Song Contest, San Remo Festival and famous other festivals worldwide are forbidden.
- The song can be performed in any language (exception for small countries).
Specific rules for small countries and not fully independant countries
- At the exception of Vatican City which can't be represented, small
countries can borrow singers from one of their neighbouring countries
in addition to their own artists. There is no language restriction if
they play with one of their native artists. Otherwise the song will have
to be performed in one of the national languages of the represented
- Liechtenstein: song in German if artist comes from Germany, Austria or Switzerland
- Luxembourg: song in French if artist comes from France or Belgium, song in German if artist comes from Germany
- Monaco: song in French if artist comes from France
- San Marino: song in Italian if artist comes from Italy
- Belize: song in English if artist comes from Mexico
- Andorra: song in Catalan if artist is not from Andorra
- The participation of dependent territory, autonomous regions, areas with a special or disputed status that have their specific music scene will be examined on a case-by-case basis by the contest's managers with the applicant player.