1 of 25 Musical group The Roop from Lithuania perform during rehearsals at the Eurovision Song Contest at Ahoy arena in Rotterdam, Netherlands, Monday, May 17, 2021. Peter Dejong Musical group The Roop from Lithuania pose for photographers upon arrival at the Turquoise Carpet event of the Eurovision Song Contest in Rotterdam, Netherlands, Sunday, May 16, 2021. Peter Dejong Musical group The Roop from Lithuania perform during rehearsals at the Eurovision Song Contest at Ahoy arena in Rotterdam, Netherlands, Monday, May 17, 2021. Peter Dejong Geert van den Berg, right, queues to attend the show in a purple dress and white wig accessorized with a red feather with his partner Roberto, left, ahead of the first semifinal of the Eurovision Song Contest at Ahoy arena in Rotterdam, Netherlands, Tuesday, May 18, 2021. The competition featuring 39 national songs from nations across Europe as well as Australia and Israel is one of the largest events staged in Europe since the global pandemic began and comes as the continent begins to tentatively ease coronavirus lockdown measures. A crowd of 3,500, tested ahead of time, will be allowed into the Ahoy arena. The number represents a fraction of its capacity to watch the performances live.