The singer told Digital Spy that she is relieved to have finally released her second album Heartbreak On Hold and is excited about promoting the record throughout the year.
"I was completely a nervous wreck for a year making this album," Burke said backstage at T4 On The Beach.
"I'm still promoting it and I have so many shows this year around the country, so I can't wait to just keep going and for people to keep hearing what I'm doing."
Asked if she has decided on the third single to be lifted from the collection, she teased: "We're talking about it! I know what I want it to be and it's between two now. We've rounded it down to two, so we'll see."
The star told fans to expect an official announcement "very, very soon" and hinted at the prospect of adding a feature artist to the single.
Of whether a rapper will appear on the cut, Burke said: "That's what we're working on."
Alexandra Burke's Heartbreak On Hold is on sale now.
Watch the music video for Alexandra Burke's 'Let It Go' below: