‘ecru (에크루)' single album [Tunnel] [Credits] Lyrics by ecru Composed by ecru, SOQI Arranged by ecru, SOQI ⠀ BGVs by ecru Guitar by ecru, hayane Keyboard by ecru, SOQI Synth by ecru, SOQI Bass by jaeshin park Drum by SOQI Mixed by SOQI Mastered by SOQI Artwork by ecru, soin A&R 신선영 Artist Management 변성환 Management ATCM Executive Producer 정태수