The 2018 contest will mark Australia's fourth year of competing in the event, following a record of three top ten finishes, with Guy Sebastian's fifth place in 2015, Dami Im's second place in 2016, and Isaiah Firebrace coming ninth in the 2017 contest. "I will sing my heart out for Australia, I'm so proud to be officially representing my country and a little bit nervous - mainly about the stress of the dress!"
"You know, the flags everyone holds up, and the parties that get put on around the world because they can't be there ... the passion behind it all", she said.
SBS, who has broadcast the event for 33 years, has enjoyed significant ratings success since Australia has graced the Eurovision stage, with nearly three million people watching the semi-finals and finals this year.
There is an interesting balance in Australia's presence at Eurovision, with some Europeans - and perhaps some locals - wondering why on earth this country is competing at a European-based song contest.
Mauboy, who started out 11 years ago on Australian Idol, has built a solid musical career outside of her Eurovision history, selling well in excess of two million singles and albums in Australia.
"I wasn't aware until I physically felt the welcome on the ground", she said.
"Having both cultures - my dad being Indonesian - gaining that influence has made me who I am, just as (it has being) Australian Indigenous from my mother's side".
She now has five months to work on a song.
"Hopefully that will be influenced into the song, whether it would be the melody or the sound of it".
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Talking to The Daily Telegraph, The Secret Daughter star said she has "unfinished business" with Eurovision.
Commentator Joel Creasey is also a great fan of Jessica Mauboy and thinks she will do well in Lisbon: "Ever since my failed audition for the Young Divas back in '08, I've been trying everything I can to work with Jess Mauboy".
Her glittering music career has led her to tour around Australia and perform with global superstars Beyonce, Flo Rida and Chris Brown.
Last year's victor was Salvador Sobral from Portugal, who won with his song Amar Pelos Dois.