Yook Sungjae is a BTOB singer with an independent career as an actor and solo recording artist. He appeared in prominent Korean television dramas while developing individual music, including the 2020 solo EP Yook O’Clock and the 2024 project EXHIBITION: Look Closely. The latter includes BE SOMEBODY, and his group and independent activities are managed through different arrangements.

BTOB made its debut on March 21, 2012, and is known for songs such as Missing You, Only One for Me and Beautiful Pain. YOOK SUNGJAE remains part of its six-member lineup, while the independently issued solo music listed here qualifies the artist for a separate SOLO classification. Solo releases and group performances are not interchangeable categories.