The Eurovision Song Contest will welcome only 35 countries to next year's competition after several countries boycotted Israel's entry.
This is the lowest number since 2003, before semi-finals were introduced and qualifying places were added.
The Broadcasting Union has confirmed the list of public broadcasters that will participate.
Spain, Ireland, the Netherlands, Slovenia and Iceland have withdrawn. Bulgaria, Romania and Moldova are returning after a break.
Next year's semi-finals in Vienna will be on May 12 and 14. The grand final will be held on May 16.
It is expected to have a more diverse jury and improved voting controls.
The EBU said it hopes the changes will ensure the contest remains "a neutral space to showcase music, talent and unity, free from undue influence."
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Most recently, Nemo and the Irish winner of Eurovision in 1994 returned their trophies in protest of Israel's participation.
List of 35 participating countries:
Albania
Armenia
Australia
Austria
Azerbaijan
Belgium
Bulgaria
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
GEORGIA
Germany
Greece
Israel
ITALY
Latvia
Lithuania
Luxembourg
Malta
Moldavia
Montenegro
Norway
Poland
Portugal
Romania
San Marino
Serbia
Sweden
Switzerland
Ukraine
United Kingdom