All four artists are hoping to win the title of "The Voice" as well as a coveted recording contract.
Billy was a frontrunner all season long, but in recent weeks, Sundance in particular has given the former child star a run for his money. It will be interesting to see who comes out on top during Tuesday night's live finale on NBC.
Billy is an aspiring pop singer despite his country roots who can belt out songs from the greats, like Celine Dion, with his impressive range. Want to learn more about him?
- At just 11-years-old, Billy hit it big with a country tune called "One Voice." His first album was certified double platinum with Grammy nominations, and his subsequent two albums were certified gold. However, his career faded when his voice changed.
- Billy gathered up the courage to publicly come out as gay in November 2014, shortly after country singer Ty Herndon did the same. Although totally unashamed of his sexuality, Billy believed the genre and industry of country music in general was ashamed of him.
- He is an ambassador for the Muscular Dystrophy Association and had also collaborated with other country artists on the single "The Choice," which raised money for the children's shoe charity Soles4Souls.
- Billy, who was born William Wendell Gilman III on May 24, 1988, hosted the 2014 Artists Music Guild's AMG Heritage Awards and took home the award for Mainstream Artist of the Year.
- In 2002, The Voice contestant played "The Young Man" in a reading for the then Broadway-bound musical A Tale of Two Cities.
- Billy appears to be in a loving relationship with IT specialist Christopher Meyer. They are reportedly not married but have been dating for over five years.