Happy Blue

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Happy Blue · HANZ

A Diary of One I Loved

℗ Eastblue

Released on: 2026-07-23

Producer: New Authors
Composer: New Authors
Lyricist: Collie
Arranger: New Authors
Background Vocals: HANZ
Drums: Seungho Kim
Guitar: Heo Jin
Programming: New Authors
Vocals: HANZ
Mastering Engineer: Reuben Ghose
Mixing Engineer: Alan JS Han
Recording Engineer: New Authors
Lyricist: New Authors
Background Vocals: 157
Background Vocals: Yechan Jeon

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