Legion supporter starring on 'The Voice'

Legion supporter starring on 'The Voice'

Before Mary Sarah Gross was a star on NBC's singing competition "The Voice," she was supporting veterans and their families.

Mary Sarah performed and recorded "Rocking Around the Christmas Tree" with The Oak Ridge Boys during The American Legion's 2014 Christmas Special. Watch the performance here. She released the recording on iTunes and donated all proceeds to The American Legion to assist the organization’s efforts in supporting veterans, the military and their families.

Now, Mary Sarah needs your support.

Following her live performance on "The Voice" next Monday, May 16, help Mary Sarah earn a spot as a final four contestant by casting your vote. Voting is open from 7 p.m. CST Monday through 11 a.m. CST Tuesday.

Vote at www.facebook.com/nbcthevoice or www.nbc.com/voicevote.