Isaiah Firebrace’s vocal hiccup could prove costly.
Isaiah Firebrace’s vocal hiccup could prove costly. Andres Putting

Isaiah through to Eurovision final

PHEW, that was close.

Isaiah Firebrace has survived a vocal hiccup during his performance of Don't Come Easy in the first Eurovision semi-final to advance to the grand final.

The 17-year-old sounded strong until he stumbled on a high note midway through the song.

It didn't help that the moment was repeated during the performance recaps during the voting period for fans.

Two snippets for the recap packages to encourage voting sre nominated by the country's team ahead of the performance.

But with the jury votes already banked and plenty of fans backing the singer, he won the chance to sing again.

Isaiah Firebrace from Australia performs Don't Come Easy during the first semi-final.
Isaiah Firebrace from Australia performs Don't Come Easy during the first semi-final. AP Photo/Efrem Lukatsky

Isaiah endured an anxious 90- minute wait after his performance at the International Exhibition Centre in Kyiv to find out if he would join his predecessors advances Guy Sebastian and Dami Im as an Eurovision grand finalist.

Ten artists are selected from the 18 countries competing in the two semi-finals.

Those who made it through the first semi are Moldova, Azerbaijan, Greece, Sweden, Portugal, Poland, Armenia, Australia, Cyprus and Belgium.

SBS also experienced their own difficulties with hosts Myf Warhurst and Joel Creasy's audio feed dropping out during the telecast.

The technical glitch is believed to have also affected the broadcasts of other countries.

The overwhelming favourites predicted to gain the coveted grand final spots were Portugal's Salvador Sobral and Sweden's Robin Bengtsson.

Sobral is also firming as a contender to challenge Italy for the Eurovision 2017 title despite Francesco Gabbani's dancing gorilla-assisted pop delight Occidentals's Karma being the unanimous choice in the lead-up to the contest.

The 27-year-old Portuguese singer melted hearts and provoked the biggest crowd reaction with his performance of his Disney theme jazz pop song Amar Pelos Dois on Tuesday (AEST).

It was the first time Sobral had graced the Eurovision stage with his doctors advising him not to travel for the earlier rehearsals because of a life-threatening heart condition and reportedly awaiting a transplant. His sister Louisa wrote the song and was his stand-in at the rehearsals.

Sweden's Bengstsson charmed the Eurovision community with his high energy dance pop number I Can't Go On, performed with four dancers and fancy footwork on treadmills.

And plenty of tight camera shots of those dreamy blue eyes.

The 10 finalists are announced shortly before 7am as the fan votes from around the world are tallied and combined with the jury votes lodged on Tuesday.

The big five - Italy, Germany, UK, Spain and France - plus host country Ukraine automatically qualify for the grand final.

Australia's other hope, Anja Nissen, competes for Denmark in the second semi-final, kicking off her campaign with the jury show tomorrow which is not televised.

SBS will broadcast the second semi live from 5am on Friday (AEST).