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Julia Nunes strumming her yukele, singing an old favorite is infectious. In fact, it's downright viral.

"Yeah, I’m most known, I suppose for the videos on YouTube," Nunes says.

In fact, Nunes has nearly 50 million views on YouTube -- more than 2.5 million for Build me Up Buttercup and 1.7 million for her cover of The Beatles' All My Loving.

Nunes admits the craze started because people found her covers cute maybe even silly and forwarded them around. But this 23-year-old Brooklynite is a serious singer/songwriter and is getting noticed for her original work too.

Today, posting videos on online may seem like a common marketing move, but Nunes says back when she was a college freshman, it was just a way to stay in touch.

"I like didn’t even put videos on Facebook because I thought that that might be like too in the public eye. I thought YouTube would be private. But it backfired in a really great way," Nunes said.

Like a lot of artists these days, Julia decided to do some online fundraising to create her most recent album. But her project had some unusual strings attached.

"I have a whole bunch of obligations to the people that helped fund it. I have like Skype concerts with people. And I’m gonna make voicemails for certain people to say like, 'Hey, this is Julia, and you’ve reached Brian,'" Nunes says.

And at this point, if you want to reach Julia, you'll probably have to have your people call her people.