Sure, the judges of "The Voice" didn't get to see who they were picking when when they chose their teams for the singing competition -- but for the viewers, there were definitely some familiar faces.
While the high-profile pasts of some of the contestants hasn't been mentioned on the show, we dug up a couple videos for a few of the players you've probably seen before.
This 16-year-old singer nailed Leona Lewis' "Bleeding Love" on the show and captured the attention of Christina Aguilera -- but you might remember her from the 2004 movie "Jersey Girl," where she played Ben Affleck's daughter.
Even then Castro was showing off her voice -- check out her performance of one of the songs from "Sweeney Todd" in the movie:
The 31-year-old also caught Christina Aguilera's attention on "The Voice" after singing Katy Perry's "I Kissed a Girl," but her biggest claim to fame was as a contestant on the second season of "American Idol." Frenchie was disqualified after risque photos of her resurfaced. She later appeared in the Broadway musical "Rent."
Check out her "Idol" audition below:
-Tori & Taylor Thompson:
These two young women sang Sugarland's "Stuck Like Glue" on the show and were chosen for Cee Lo Green's team -- but they first appeared on TV back in 2004 on the short-lived "American Idol" spinoff, "American Juniors."
Check out their "Juniors" auditions below:
Tarralyn was chosen by Christina Aguilera after being the first-ever contestant to sing on "The Voice," but it wasn't her first-ever appearance on reality TV.
Tarralyn was a contestant on the VH1 show "Born to Diva" back in 2004 -- and has also performed with Mary J. Blige and Ray Charles. Check out a "Diva" performance below:
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