The pair premiered 'Waterline' as a possible contender for Ireland's entry at this year's Eurovision Song Contest.
Jedward - consisting of twins John and Edward Grimes - have yet to be formally selected to represent Ireland, but recently told Digital Spy that they're planning a "huge mega-performance".
However, the duo previously announced that unheard song 'What's Your Number?' would be their Eurovision bid.
Writing on Twitter last week, the siblings revealed: "Our Eurovision song is called 'Whats Your Number?'. Its a really fun song (sic).
"You can listen to it millions of times and always smile! Ahhhhhhh we can't wait for your to hear it! Whats Your Number is gonna change the world!"
Jedward's 2011 Eurovision entry 'Lipstick' gained them a following across Europe after the single charted in the top 20 in Ireland, Germany, Austria and Belgium.
Later this month, Jedward will compete against other acts including Maria McCool and Donna McCaul for the opportunity to represent Ireland at the Eurovision Song Contest 2012.
'Waterline' will be available to download in Ireland from February 24.
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Listen to Jedward's 'Waterline' below: