원혜영 '어떤 마음일까' 어떤 마음일까, 날 바라보는 넌 [CREDIT] Music by 원혜영 Lyrics by 원혜영 김지은 1.어떤 마음일까 (With 장들레) Arranged by 장들레, 원혜영 Vocal 장들레 Guitars 이태욱 Bass 장들레 Chorus 장들레 Vocal Recorded by 김태호 at Groove N Balance Studio 2.어떤 마음일까(With 윤한솔) Arranged by 원혜영, 장들레, 신성진 Vocal 윤한솔 Piano 장들레 Guitars 이태욱 Strings 필스트링 Strings arranged by 신성진 Vocal Edit & Tune by 김효준 Vocal Recorded by 이상철 at TONE Studio Strings Recorded by 김희재 at CS Music& Mixed by 곽동준 Mastered by 권남우 at 821 Sound Mastering Artwork by Jimmy c