Sunye covered Ailee's "I Will Go to You Like the First Snow" on 'Immortal Songs'.

On the September 17th 'Drama Vocal OST Queen', Sunye covered Ailee's chart-topping OST ballad "I Will Go to You Like the First Snow" from the drama 'Guardian: The Lonely and Great God'. Backstage, Bada expressed, "Sincerely, this is the best OST song from a female singer. I completely became an Ailee fan after this song came out." Sunye then said, "The song is good. It's a song I really love too."

[Spoilers Below]  

At the end of the episode, it was Ailee who took the win with her cover of "Love Always Flees".