Y/n Stark is Tony Stark's little sister. She loves singing. The day of her parents murder she happened to be in the back-seat. The Winter Soldier not knowing what to do takes her back to HYDRA and gets told to train her soon creating Symphony. 15 years later y/n manages to escape hydras clutches running into her brother on the way. 3 years Civil War happens and Bucky manages to worm his way back into her life. The only question is Can War and Song ever Mix?