Blue Bird Original Songs For Children Vol. 3An Sunhee, Park Eunju, Cho Moonhee, 김세희, Kim Gyeoul, Lee JiYoon, Kim Eunyoung, Moon Jekyun, Seo Bitnarae, Choi Narae, Kim Hyunyi, Soojung Lee, Jung Kiyeol, Cha Eunyoung, Sung Mihyun, Chae Eunsung, Kim So Yeon, Kim Juyoung, 정진경, Kim Doohyun & Choi Bokyung Blue Bird Original Songs For Children Vol. 4김세희, Sung Mihyun, Lee Minjung, 강민정, Kim Gyeoul, Choi Eunjung, Kim Hyunhee, Kang Mi Yeon, Lee Hyun, Ryu Woonjung, Kim Hyunju, Lee Kieun, Kwon Soohyun, 정진경, Ko Woori, Song Taekdong, Lee Kangsan, An Sunhee, Kim So Yeon, Lee Jumi, Kim Hyo, Bae Jihyun, 이은정, Park Eunju, Kim Hyojin, Kim Daeyoon & Lee Jaehwan 
