01 Regain Lyrics by 아현 Composed by 아현, 문태현 Arranged by 문태현 Vocal by 아현 Chorus by 아현 Piano & Synth by 문태현 Guitar by 문태현 Bass by 문태현 Programing by 문태현 Album art & Artwork by 김효진 Mixing & Mastering by 문태현 at 나무스튜디오
02 Regain (Inst.) Composed by 아현, 문태현 Arranged by 문태현 Piano & Synth by 문태현 Guitar by 문태현 Bass by 문태현 Programing by 문태현 Album art & Artwork by 김효진 Mixing & Mastering by 문태현 at 나무스튜디오