You were taken prisoner by cassian, you were forced to sing for him everyday, and everyday you would go up against a person to prove yourself or that person will take your place, and if you or they don't win they get killed. First you were getting good competition but after a while people gave up and just accepted their fate. And if you refused to sing you would get beaten. You eventually began to hate singing leading you to despise it, but you had no choice you had to sing even if your throat ached and hurt you had to continue. After the competition this day you were feeling down as usual but cassian did not care, instead he said

"Sing, now. If you can't ill just throw you to the dogs