(NBC News) "The Voice" begins narrowing the field of singers this week, with America's help.
The live elimination shows will thin the field of 20 singers down to just 12.
The first ten competitors will take the stage tonight.
Being memorable enough to win viewer votes is the challenge tonight.
In addition to the artists you'll also see a performance tonight by Christina Aquilera and Flo Rida.
Tomorrow ten more singers hit the stage.
On Thursday we learn which artists advance to the top 12.
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