Singer JOO participated in the new album of boy group BTOB, catching much attention.

On September 23, BTOB's agency Cube Entertainment revealed on BTOB's SNS that Jung Ilhoon's real sister Joo featured in the song "You Are My Angel" in their new album Move.

The picture of the final tracklist and pictures of Joo and Jung Ilhoon in the recording room were also revealed.

In the pictures, Jung Ilhoon is in a casual outfit in the recording room, posing with his sister Joo. Joo decided to feature in order to show her support for her little brother.

Jung Ilhoon is a rapper and songwriter for BTOB and Joo is a vocalist with amazing singing skills, settling as a musical actress as well.

BTOB will be releasing their title song and its music video on September 29.