Toronto teen with Down Syndrome goes viral with cover of John Legend's 'All of Me'

A 13-year-old Toronto girl can now count her idol as one of her fans.

In January, Madison Tevlin uploaded a video of herself singing John Legend's "All of Me," which has since collected more than 4.8 million views. The viral star has won over the internet thanks to her vocal prowess, which is all the more impressive since she has Down Syndrome, a genetic disorder that tends to make one's voice lower and take twice as much energy to produce.

Earlier this week, Legend re-tweeted this Huffington Post story about Tevlin, which predictably left her ecstatic.

According to CTV, the Canadian teen has been getting several calls for interviews and a casting director is interested in having her audition for a movie.

"I was not expecting this," Tevlin told CTV, "It was so crazy."

She reportedly practiced "a lot" before she filmed the performance, and her goal is to achieve 21 million views by March 21 in order to celebrate World Down Syndrome Day.

Tevlin posted a video on Monday thanking her fans for all their support.

Tevlin isn't the first person with Down Syndrome to have her singing voice heard. Last summer, Boston Red Sox fan Mike Mullins sang "The Star-Spangled Banner" in front of 37,000 people at Fenway park.

The 38-year-old man, who has been singing the national anthem for the minor league PawSox for a decade, had reportedly campaigned to open a game at the stadium for four years.

“Piece of cake,” Mullins said of the gig.

A few months later, a little girl with Down Syndrome named Zariar won the Internet with her rendition of Frozen's "Let it Go." Her father reportedly filmed her mouthing the words to the song as she stood on a bathroom sink and gave it her all -- her choreography is pretty damn adorable too (our favourite is the pig tail flips).