(NBC) Tonight is the moment of truth for the three finalists on "The Voice".
Final performances will determine who earns America's vote and wins the competition.
A major consideration for each of the singers is choosing just the right song to perform.
"We went through two different songs and then realized, it's not big enough," finalist Will Champlin says.
Tonight's song choice was agonizing for Tessanne Chin as well, and made even tougher by her iTunes topping performance last week.
"Especially, after a song like "Bridge Over Troubled Water" you have to follow that
carefully," she says.
Chin says the one they settled on scares her, in a good way.
"Because of the person it's done by, we want to do it justice," she hints.
16-year-old Jacquie Lee is more than a decade younger than her fellow finalists and stunned to be in the final three.
"I sort of auditioned on a whim, so I wasn't expecting anything," she admits.
But Lee found a kindred spirit in coach Christina Aguilera.
"She reminds me so much of myself, just being a sponge every week, taking it all in and getting better and better," Aguilera says.
The challenge tonight is being the best.
After fans vote on tonight's performances, the winner of "The Voice" will be announced in the two hour finale tomorrow night.
It'll feature performances by Lady Gaga, Celine Dion, Ne-Yo and OneRepublic.
The winner of "The Voice" earns a $100,000 dollar recording contract with Universal Republic Records.