Today's guest is someone who's armed with a rich but clear voice. It's vocalist Joo, who fills up the stage with her elegant and feminine features. She's now back after a long hiatus of 5 years. She is back with the sad ballad piece "Cry & Blow," which follows her hits "Bad Boy," "Because of a Man" and others. Find out about her special comeback story~ And learn about her busy days as a musical actress and a student in the theater department. Plus! Find out about her affection towards her brother Jeong Il Hoon, who's a member of the group BTOB! And get the scoop on her future activities~ Let's now meet Joo and learn more about her on this week's K-Jukebox!