Ailee will release her new song 'While We Were in Love' on Oct. 6. It is the first comeback in 10 months since the single "Sweater" last December. Fans are already showing high expectations for Ailee's comeback, which proved "Ailee to trust and listen to" in every song released regardless of genre.

Ailee's new song, "While We Were in Love," is a song that expresses the heart left with regret after losing the name "We," which was only loved unconditionally. It is expected to be a 'Ailee ballad' that moistens the emotions of autumn nights.