Australia’s Delta Goodrem has given a final powerhouse performance at the grand final of Eurovision at Wiener Stadthalle arena in Vienna, Austria.

The singer and former Neighbours star, arguably the best known act in this year’s song contest, performed a song she co-wrote called Eclipse, on a gold piano with its own podium, accompanied by a harpist.

Goodrem was the eighth performer out of a total of 25 acts competing in the song contest at the Wiener Stadthalle in Vienna on Saturday night (Sunday morning AEST), sandwiched between Ukraine and Serbia.

The singer and former Neighbours star was accompanied by a harpist for her song, Eclipse.

Ahead of the final thousands of people took to the streets in Vienna to protest Israel’s participation. Iceland, Ireland, the Netherlands, Slovenia and Spain also boycotted the competition because of Israel’s war in Gaza.

Goodrem was elevated into the air from the top of her sparkly gold piano at the pinnacle of her song.

“Thank you so much,” she said as she waved to the crowd and left the stage.

Earlier she told SBS the song had themes of connection, timing and alignment.

“You could take it as a love song,” she said. “You could take it about the timing of love or your time in your own life that aligns when time is meant to be.

“And that’s when eclipse happens.”

Goodrem joined the cast of Neighbours in 2002 and released her debut album, Innocent Eyes, the following year.

She has released eight more albums, coached rising stars on The Voice and portrayed Olivia Newton-John in a biopic about the singer’s life.

The “Big Four” countries – Britain, Italy, Germany and France – were guaranteed a place in the grand final as they are the biggest financial contributors to the contest.

Austria, as this year’s host, also automatically qualified.

Millions of viewers around the world will cast their judgment on the performances at Eurovision’s 70th anniversary event, voting by phone or text message – although they are not allowed to vote for their own country’s act.

The act with the most points wins, with their country getting to host the competition next year.

Finland, Greece and Australia have been the favourites in prediction markets.

It is unclear what would happen if Australia wins but it is believed it would be made to select another host – a European country – or co-host it.

Goodrem said Australia should be allowed to host if she won.

“We had to get up [at four in the morning] and we’re very passionate about Eurovision,” she told SBS.

“I’m not into the logistics just yet. I have no idea of the operational side.”

Swedish act Felicia, who made it through to the final with her song My System, fainted backstage following the second dress rehearsal on Friday, but still made it to the grand final.

Australia has participated in Eurovision since 2015. It was most successful in 2016 when Dami Im finished second with her song Sound of Silence in Stockholm, losing out to Ukraine’s Jamala.

-with AAP