Girl's Day made a comeback on 'Music Core' with their new track, "Hug Me Once", from their first mini-album. The group got together with producer Nam Gi Sang (of "Twinkle Twinkle" fame) to create "Hug Me Once", a song that carries a melody as refreshing as a summer breeze. The repetitive use of the phrase "hug me once" adds to the addictive quality of the song, and ultimately brings together the harmony of the five girls' vocals. Girl's Day said, "We've worked hard preparing this song for the past two months so we hope that our fans will enjoy it. We're always nervous about our comeback stage, but we'll do our best to make sure that it's both cherished and enjoyable." Source: Daum Music