The singer who appeared onstage with Michael Jackson in his This Is It documentary has emerged as an early frontrunner in the new season of U.S. Tv talent show The Voice.

Judith Hill wowed judges Blake Shelton, Adam Levine, Usher and Shakira with her powerful rendition of Christina Aguilera's What a Girl Wants on Monday night (25Mar13).

Hill, who performed Heal The World at Jackson's memorial concert in 2009, was selected as one of his This Is It backing singers and rehearsed with the King of Pop during rehearsals for his doomed London dates.

She also performed the duet I Just Can't Stop Loving You with Jackson in the This Is It movie.