Ailee managed to win Patti Kim's heart.

On this week's "Immortal Song 2," the singers sang previous hit songs by Patti Kim.

It was especially worth noting that popular singers such as Kim Tae Woo, K.Will, and Sunghoon of Brown Eyed Soul picked Ailee as the most anticipated singer.

Ailee is the famous 'prepared' newbie who managed to attract a million viewers with the clip of her singing ‘Hero’ by Mariah Carey.

Through Patti Kim's hit song ‘Light and Shadow’ from 1967, Ailee was able to project her powerful voice.

Patti Kim applauded her with a 'wow' and suddenly asked the singer how much she weighed. Ailee answered,’120 lbs’ and added that this was her actual weight.

Patti Kim replied, "You looked far less than that. It's absolutely stunning to see such a powerful voice emanate from such a petite figure. You're going to make it big." Ailee smiled in response.

Lyn said that "Ailee will become the next Ali."