D-Day is the debut studio album by South Korean rapper Agust D, also known as Suga of BTS. It was released on April 21, 2023, through Big Hit Music, as the third installment in a trilogy of works that includes the mixtapes Agust D (2016) and D-2 (2020). Comprising 10 tracks, the album features appearances by BTS bandmate J-Hope, IU, Ryuichi Sakamoto, and Woosung of the Rose. Two singles were released in promotion of the project: "People Pt. 2" featuring IU on April 7, and "Haegeum", which premiered alongside the album. Music videos accompanied both singles, with a third released for the track "Amygdala" on April 24.

Each song has its own score

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