BtoB Blue

BtoB Blue
비투비-블루
BtoB Blue비투비-블루
Origin	Seoul, South Korea
Genres	K-pop; Ballad; R&B;
Years active	2016; 2018;
Labels	Cube;
Members	Eunkwang; Changsub; Hyunsik; Sungjae;

BtoB Blue (Korean: 비투비-블루) is the first official sub-unit of South Korean boy band BtoB formed under Cube Entertainment in 2016. The sub-group consists of the group's vocal line Eunkwang, Changsub, Hyunsik and Sungjae. The sub-unit debuted with their digital single titled "Stand By Me" on September 19, 2016.^[1]

^ 비투비-블루, ‘내 곁에 서 있어줘’ 공개...감성 보컬 통했다 [BTOB-BLUE reveals'Stand by me'... emotional vocal works]. BNT News. September 19, 2016. Retrieved 2020-11-15.

[1] 비투비-블루, ‘내 곁에 서 있어줘’ 공개...감성 보컬 통했다 [BTOB-BLUE reveals'Stand by me'... emotional vocal works]. BNT News. September 19, 2016. Retrieved 2020-11-15.

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