프로듀서 배드맥스(BadMax)가 새 싱글"Promo"를 발매한다."Promo"는 곧 발매가 될 배드맥스(BadMax) EP의 수록곡이다.피쳐링으로는 Basick, A-Chess, Siggie Feb, Deepflow가 참여했다.[Credit]Executive Produced by TrayJuiceProduced by BadMaxArranged by BadMaxLyrics by Basick, A-Chess, Siggie Feb, DeepflowMixed, Mastered by purple coinArtwork by Kimchidope