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When he's not busy representing his country at the Summer Olympics in London, diver Matthew Mitcham chills out in the – apparently very warm – Olympic Village with his ukulele. He's uploaded a video of himself crooning to his official YouTube channel, joining the U.S. swim team in its attempt to have a little viral fun with a Youtube cover of a pop hit. And what song is the 2008 gold medalist showcasing for all of his fans? Beyonce's "Single Ladies," of course.

Mitcham says he uploaded the clip "because someone on twitter asked me to upload a video of me playing the ukulele."

You can gripe that he didn't opt for a more current song, but at least he didn't toss his hat into the "Call Me Maybe" cover brigade. Also, it's pretty perfect and undeniably adorable!

Check it out:

"I profess to be neither a great instrumentalist nor singer, I'm just an Olympic diver who likes to strum away in his spare time," Mitcham wrote in the video's description. "I think this is where I am supposed to credit Beyonce or something."

What do you think of Matthew's crooning? Do we have an Aussie Jason Mraz on our hands? Let us know in the comments below!

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By: Uptin Saiidi (@uptin), with reporting by Tami Katzoff

The Summer Games are sure to bring many celebrities to London from actors, artists and even U.S. First Lady Michelle Obama. But for the next few weeks, the real focus of the world will be on the thousands of Olympians representing their respective countries.

MTV News caught up with some of the U.S. athletes in New York City and asked them which artists get them pumped up before the big competition. Here’s what they said:

Arielle Martin, BMX Racing
Fact: During the summers, Arielle and her husband ride their twin Ducati Monsters.
Music: Motley Crue – "Kickstart My Heart." "We get time trial song every time we go on the track to qualify, individually, and that’s been mine for the last three years."

Betsey Armstong, Water Polo
Fact: She's the only player on the USA team not from the state of California.
Music: "A lot of rap music, a lot of Jay-Z, Drake, Rihanna."

Race Imboden, Fencing
Fact: Prior to heading to the Olympic Games, Race worked as an intern at music label, Fool's Gold.
Music: "Danny Brown, he’s got some southern soul to him. I like it."

Dagmara Wozniak, Fencing
Fact: At age 20, she attended the 2008 games as a replacement athlete for the U.S. team.
Music: “I like Kanye West, Lady Gaga.”

Nicholas Long, BMX Racing
Fact: He dreams of one day seeing the world … while on his bike.
Music: "I listen to pretty much metal rock music, Miss May I or Devil Wears Prada."

Timothy Morehouse, Fencing
Fact: Tim competed at the 2004 Olympics, and prior to that was a 7th grade teacher.
Music: Bruce Springsteen, Counting Crows, Ashlee Simpson, but his ultimate favorite, he says is, "Rocky, 'Going to Fly Now,' if I ever need to get going, that song never fails."

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By Uptin Saiidi (@uptin)

More than an estimated one billion people will be watching tomorrow's Summer Olympic opening ceremony. While the planning has been over two years in the making, director Danny Boyle has been careful not to give away too much of what we can expect. This morning on "Today ," though, he sat down with an inquisitive Meredith Vieira and teased some of what we’ll see.

Setting The Bar

Meeting the expectations set by the opening ceremony at the 2008 Bejing Olympics was a difficult feat for the "Slumdog Millionaire" director, but he’s not letting the pressure get to him. “Beijing was beyond compare," he said. "It was on a scale that it's unimaginable, almost anywhere else in the world at the moment, so you go, ‘Fine, all hail Beijing, that’s the peak.’ We're very grateful to Beijing that it brought to an absolute climax the scale of these opening ceremonies."

When asked how he’d know if his ceremony was a success, it didn’t seem to be an issue on his mind. “I believe it’s a success already because I believe the way it's mobilized people together in a tough time in Brittan and Europe and the world."

Logistics

The show will open with a 27-ton bell being rung (and most likely used at the closing ceremony as well). There are also over 10,000 volunteers participating tomorrow night, whom Danny calls the "real stars of the show."

Inspiration

The inspiration behind the show is from a line in Shakespeare’s “The Tempest,” which goes, "Be not afraid, the isle is full of noises.” And the film director isn’t approaching this production as anything other than that. "We're trying to do a live film. It’s tough. The way you'll experience it on television will feel a whole lot more immediate and visceral."

He also said that the setting will be based on a model of a meadow, which plays a key role in the overall setting and experience.

Music

We know Paul McCartney is confirmed to be perform, but details beyond that are minimal, aside from the fact that music is a highly important part of Boyle’s vision. "Something that's very important in our culture is music," he said. "Our history of music for such a small place, really pop music is extraordinary, one of the examples is the Beatles."

Influence of Literature

Boyle recognizes there’s a “very close connection between some of the great writers of children's literature who have been immortalized by Disney (Cruella de Vil, Captain Hook, Alice In Wonderland, Queen of Hearts), but actually, they originate in British literature, and the most famous of that is Peter Pan.”

Vieira asked, “Am I going to see Peter Pan?”

"Yes,” he laughed. “I mean, if they work.

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