BTOB's Yook Sungjae Breaks Idol Singing Stereotypes on “King of Mask Singer” | KissAsian
Girl Group Member Revealed to Be Contestant on “King of Mask Singer” | Soompi
Netizens find more proof that BTOB's Sungjae is a contestant on "King of Mask Singer"
King of Mask Singer - Wikipedia
King of masked singer] 복면가왕 - Now I'm tired Ddaeng Bul, Yuk Sungjae - Thanks 20150510 - YouTube
A new F4 is created with King of Masked Singer contestants Chen, L, Ken and Sungjae - Random - OneHallyu
King of masked singer] 복면가왕 스페셜 - (full ver) Yook Sung Jae - The Man The Woman, 육성재 - 그 남자 그 여자 - 동영상 Dailymotion
BTOB's Sungjae stuns everyone with final performance on "King Of Masked Singer"
TVPP】Sungjae(BTOB) - One Day Long Ago, 성재(비투비) - 오래전 그날 @ King Of Masked Singer (152kbit Opus) by mei
Why Sungjae was "opted out" from King of Masked Singers | K-Pop Amino
TVPP】Sungjae(BTOB) - Thanks, 성재(비투비) - 감사 @ King of Masked Singer - YouTube
King of masked singer] 복면가왕 스페셜 - (full ver) Yook Sung Jae - The Day Long Ago, 육성재 - 오래전 그날 - YouTube
Netizens find more proof that BTOB's Sungjae is a contestant on "King of Mask Singer"
My Top 5 performances of King of Masked Singer…so far | QT K-POP
Yook Sungjae Drops out of “King of Mask Singer” to Ensure Fairness | Yook sungjae, Sungjae, Singer
Netizens find more proof that BTOB's Sungjae is a contestant on "King of Mask Singer"
하나훈 on Twitter: "[DOWNLOAD] 150503 & 150510 MBC King of Masked Singer Ep 5 + Ep 6 - #Sungjae Cut #비투비 #BTOB #성재 http://t.co/Y7uy5wi9Xw http://t.co/W2rTLadukI"
Masked Singer' PD Selects “Vocal Skills Top 7” Among Idols | Time-Travelling Tofu
Profile and Facts of BtoB's Yook Sung-jae: From His 'We Got Married' Days with Red Velvet's Joy to His Latest News | Channel-K