The Voice finalist Joelle Moses has spoken of a horrific sexual assault that she suffered at the hands of a gang when she was a teenager.

The 21-year-old backing vocalist – who wowed the judges on Saturday’s show with her rendition of Adele’s Rolling In The Depp – told the Sun that the incident occurred at her school, and afterwards led to her being bullied by the other pupils.

“The gang who attacked me were the most popular boys in my school,” Joelle said.

“Three girls were there but they left me. They looked shocked and horrified at first but they wouldn’t go to court.”

“They wouldn’t speak about what happened. They pretended it never happened,” she added. “I had to go to the police station but it was so painful I didn’t want to go through it’.

Joelle admitted that it was turning to music which eventually saved her.

“I felt very very alone and music was the way I expressed myself,” she said. “It was the only escape I had.

“Music’s everything to me. I sing when I’m happy, I sing when I’m sad. It’s helped me overcome so much.”

Joelle will compete in the live finals of the show as a member of will.i.am’s team, after having her pick of all four judges on Saturday night.