NA Domo Singing Competition judge Tim Ulacake is appealing to contestants who have made it through to the second round of eliminations next week to practise more if they want to advance further into the competition.
The first elimination round was held earlier in the week when 16 of the 23 contestants advanced to next Tuesday's second round of eliminations.
Despite powerful, livening and transforming performances, Mr Ulacake said one thing he noticed was that the performers faltered in parts of their performances.
"You could tell that this was because they did not spend a lot of time practising," he said.
Mr Ulacake said the onus was on the competitors to take time out of their schedules to practise.
"If they want to advance to the next round, if they want to make something out the raw talent that we have identified then they should put in the extra effort which means time to practise.
"Perfect practice makes perfect," he said.
He said some groups and soloists gave transforming performances but areas like breathing, keeping up to the beat of the song and knowing their queues let them down.
"We have given them advice every time they perform and they have been through boot camps.
"We want them to take the advice and techniques and put it into practice.
"It will help them develop their talent and really raise the bar in the competition."
The second elimination round is scheduled for next Tuesday at the Downtown Boulevard from 6:30pm.
"Competitors also need to choose the right song, one that will match their tone and pitch tones," Mr Ulacake said.