San E [나쁜X (BAD YEAR)]나쁜X (BAD YEAR)작사 : San E작곡 : San E, Cosmic Sound, Cosmic Girl편곡 : Cosmic Sound, Cosmic GirlProduced by San EComposed by San E, Cosmic Sound, Cosmic GirlLyrics by San EArranged by Cosmic Sound, Cosmic GirlKeyboard by Cosmic SoundGuitar by 박기태Chorus by Cosmic GirlRecorded by 9999 at BRANDNEW MUSIC StudioMixed by 마스터키 at MasterPiece SoundLabExecutive Produced by 라이머 a.k.a Mr. BIG Daddy for BRANDNEW MUSICProduced by San EPromotion & Artist Management Director 남서우Recorded by 9999 at BRANDNEW MUSIC StudioMixed by 마스터키 at MasterPiece SoundLabMastered by 마스터키 at MasterPiece SoundLabAdministration Director 김형욱Administration & Accounting 윤성혜, 김세민Production Co-ordinator 마스터키, 원영헌, 동네형, ASSBRASS, 리시, 9999, XEPY, 태완, DJ JuiceArtist Management 정민규, 이호진, 권용완, 김준배, 박승현Strategy Planning 정의봉A&R 유영준, 한태희Marketing & Online Promotion 이미희, 오정아Artist Development & Casting 장유진Fan Marketing 이미희, 오정아, 타카야마 나리사Overseas Business 타카야마 나리사, 이화일Art Direction & Design LaficStyle Director 김보성Stylist Assistant 심화용, 박성원Hair BLACK LIP (한주영, 조수연, 윤혜정, 배수진)Make Up BLACK LIP (한주영, 조수연, 윤혜정, 배수진)Presented by BRANDNEW MUSIC