David O'Connor, 21 Demands, Maeve O'Donovan and Scuba Dice will compete on Sunday for a place in RTÉ's 'You're A Star' semi-finals on Saturday 17 March.
Each act will be singing two songs, one chosen by the acts themselves and another chosen by the judges.
The hour-long live show will start at 6.30pm on Sunday 11 March, with the results show following at 8.30pm.
This week's guest judge will be Brian McFadden, who will also perform his new single 'Like Only a Woman Can', due for release on in April.
The final of the talent show will take place next Sunday, 18 March.
The winner of this year's 'You're A Star' will win a recording contract with Universal Music, a publishing contract with Sony ATV Publishing, €10,000 worth of musical equipment from Roland Ireland, and a cash prize.
The RTÉ 'You're A Star' website is here.