Christina Aguilera surprises fans by listening to their covers of her songs: Watch! (Exclusive)

Hey, that's her song!

Christina Aguilera gave some passionate fans of hers the surprise of a lifetime by teaming up with Glamour's "You Sang My Song" series to listen to their YouTube covers of her most iconic hits and give them feedback -- and AOL.com has an exclusive first-look at the tear-jerking video.

The "Fall In Line" hitmaker took the time to listen to impressive amateur covers of songs like "Beautiful," "The Voice Within," "Ain't No Other Man," "What A Girl Wants," "Fighter" and more. The singers then filmed their reactions to finding out that Christina watched their covers -- and we're absolutely obsessed with their reactions!

As a fun bonus, one of the covers that Christina reacts to belongs to Vonzell Solomon, who came in third place on Carrie Underwood's season of "American Idol."

Watch the fun video at the top of the page.

See recent photos of Christina Aguilera:

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