It will be a no-holds-barred night for the five remaining contenders in “X Factor” Australia.

There will be no theme and restrictions for tonight’s performances, unlike in the past weeks.

“X Factor” Australia said this is first time in the competition, in which the contestants will “sing the very best songs they could find.”

In tonight’s show preview, it was teased that the songs the Top 5 will be performing include those from Ellie Goulding, Macy Gray, Annie Lennox, and John Legend.

The five remaining acts are: Big T, Cyrus Villanueva, Matt and Jess, Mahalia Simpson, and Louise Adams.

Mentor/judge Chris Isaak was also seen teasing that the next episode will determine who will make it to the finals.

Isaak was seen singing: “Knock, knock, knocking on grand final’s door…,” while standing beside his act, Cyrus.

Watch preview here.

Last year’s winner Marlisa Punzalan will also be having her homecoming at the “X Factor” stage tonight. Marlisa is set to perform her brand new single “Forever Young”.

Don’t miss Marlisa and the Top 5 performances in tonight’s show at 7:30pm on Channel Seven.

Meanwhile, Mahalia, who has been in the bottom two last week, opened up about her experience at the competition.

Mahalia Simpson survived the elimination after Natalie Conway has been sent home.

“X-Factor Australia” judges Dannii Minogue and Isaak voted to keep Simpson in the competition, while judge James Blunt chose to save Conway. However, judge Guy Sebastian voted to eliminate Simpson, which forced a deadlock. In cases as such, the contestant with the lowest votes will be sent home, the International Business Times noted.

Being at the bottom two, Mahalia told PopSugar: “Sometimes I’m torn between two different emotions. One is, ‘Oh snap, I feel defeated’ — it’s a little bit discouraging when you’re in the bottom two because you’re like, ‘Maybe I’m not that good.’ But even though I’ve made it this far, insecurities and doubts come. But then on the other side, I guess it’s another opportunity for me to sing stuff that’s who I think I am as an artist.”