The British star was practising her song Storm for tomorrow’s contest when she says a poltergeist started meddling with the sound.
The 29-year-old was not scared – she just hopes it is a friendly spirit that will help her work some magic and get viewers voting for her.
“We were in the rehearsal making some tweaks to my performance,” said SuRie. “My vocal coach Mark had been playing the track out of his laptop but we wanted to change a few things.
“It was then I swear there was a poltergeist in the room. We had stopped the track and were talking through some notes and then all of a sudden it started playing.
“Suddenly the song was playing really loudly in the room – but no-one had been anywhere near the laptop.”
“Suddenly the song was playing really loudly in the room – but no-one had been anywhere near the laptop. So we think something was definitely happening.”
And the incident has convinced SuRie, real name Susanna Marie Cork, that ghosts could exist.
She added: “I’ve never seen any evidence and am not sure what to believe. But this has got me thinking.”
The spirit of a young girl is said to have been seen in Lisbon’s Estoril district, close to the Alti Arena which is hosting tomorrow’s contest. The ghost is said to be so scary that seeing her left one man on the verge of suicide.
And locals have also heard screams coming from empty rooms at a house in nearby Quinta das Conchas Park, said to be haunted by the ghost of a woman who was kept captive there.
SuRie will perform Storm in front of a TV audience of 200million as 26 countries battle it out for the legendary title.
The current favourite with the bookies is sex bomb Eleni Foureira, who is representing Cyprus.
Other acts include 2016 X Factor runner-up Saara Aalto, who is competing for Finland.