On SBS 'KPOP Star' that aired on the 8th, BoA, one of the judges, spoke out against Kim Nayoon's performance. 

On this day, Kim Nayoon sang Chistina Aguilera's 'Lady Marmalade'. After listening to Kim Nayoon sing, BoA commented, "I thought you sang well before but you don't. Because you try hard to look cool, you're missing the notes and I can't even hear your voice very well."

Park Jinyoung, another judge, added "As the stress builds, you're falling apart. Because you're so nervous, you can't show what you've got."