‘XXIN’ [Sunday Seoul] ‘Xxin’의 새로운 신곡 [Sunday Seoul]이 발매되었다. 연인과의 여유로운 일요일을 만끽하는 내용이며 프로듀싱 및 스크래치로 TheZ가 참여하였다. [Credit] Executive produced by The Z，Xxin Produced by The Z Composed by The Z Lyrics by Xxin Arranged by The Z Drum programming by The Z Scratch by The Z Bass by The Z Piano by The Z Rap by Xxin Mixed by The Z Mastered by The Z ArtWork by hellvetika M/V Directed by DX(Xxin&Happy) Model 이어진