Lady Gaga Duets with 10-Year-Old Maria Aragon in Toronto

Lady Gaga Duets with 10-Year-Old Maria Aragon in Toronto

Lady Gaga Duets with 10-Year-Old Maria Aragon in Toronto

At her concert in Toronto's Air Canada Centre last night (Mar. 3), Lady Gaga furthered her friendship with Maria Aragon, the 10-year-old whose YouTube cover of "Born This Way" has racked up nearly 18 million views in two weeks.

Maria Aragon Covers 'Born This Way' On 'GMA,' Announces Duet With Gaga

The Mother Monster performed a stripped-down rendition of her current single -- which leads the Hot 100 chart again this week -- alongside Aragon, who sat perched atop Gaga's lap while both played the piano.

After the extended, emotional performance, both singers teared up when Aragon addresed the crowd. The young Winnipeg singer later returned to the stage after Gaga's performance of "Bad Romance."

Before the show, Gaga expressed her love for Aragon on Twitter, posting a "paws up" picture of the two backstage. "Myself +10 year Old Lady Maria of Winnipeg," Gaga wrote. "She signed my t-shirt, she ate my heart, just like you."

Gaga first hailed Aragon's performance via her Twitter account, declaring: "Can't stop crying watching this. This is why I make music. She is the future." Aragon has since appeared on ABC's "Good Morning America" and other media outlets.

"Maria represents what this song is all about," Gaga told the Canadian crowd after the performance. "It's all about the next generation and the future."

Aragon isn't the first YouTube sensation to be embraced by a music star -- or by Gaga, for that matter. Fourteen-year-old Greyson Chance was signed to Gaga's management team last year, after a video of him covering "Paparazzi" became a viral sensation, and of course, a certain someone named Justin Bieber was taken under Usher's wing. Will Gaga be the next star to shepherd a young talent from the YouTube glory to worldwide fame? Share your thoughts in the comments.

Watch Maria Aragon's original cover of "Born This Way" below.