There's always something rather theatrical about South American national anthems, and the Uruguayan number is no different.

By contrast, Advance Australia Fair is a little more subdued.

Kick-off is moments away.

Don't forget to give us your thoughts as Pool A takes shape. Who's your money on to make the quarter-finals - and why? Does Michael Cheika's rotation give his side the edge ahead of their meeting with England? Where might the drama lie on in Pool A's remaining fixtures?

Thoughts on all of this and more, please, via text to 81111, Twitter using the hashtag #bbcrugby, the BBC Sport Facebook page or our Google+ page. Ready? Let's go.

Image source, Getty Images

Right then, let's get on with it. The two players make their way onto the Villa Park pitch, Australia in their usual gold and green, Uruguay in an all-white strip punctuated by a hint of sky blue trim. Very fetching.

The two skippers, both locks, are Dean Mumm and Santiago Vilaseca.

A quick heads up that you can also listen to live commentary from our lunchtime kick-off on BBC Radio 5 live by tapping the 'Live Coverage' tab at the top of this page.

We've got just about every angle covered.

Image source, Getty Images

Michael Cheika's changes mean that former Exeter lock Dean Mumm captains Australia for the first time - the first New Zealand-born player to do so in a Test in the professional era.

It has been a crazy few days for the 31-year-old, who became a father on Friday when his wife Sarah gave birth to a baby boy in London.

Sarah stayed in England for work and the latter stages of her pregnancy when Mumm returned to Australia earlier this year to join Waratahs.

"She rang me at 3.40am [on Friday], saying her waters had broken and it's on. That was the first indication I had we were going early," Mumm told the Canberra Times., external

"It was all a bit of a haze, but it turned into a bit of a frantic panic. But we got there in time and she was happy I'd got there in time to see the birth."

Image source, BBC Sport

If you're otherwise occupied on this beautiful Sunday in late September - at least it's beautiful where we are - then, as always, you can receive updates straight to your device of choice via the BBC Sport app.

Like the sound of that? Click here to find out how it all works.

A day off for Australia wing Adam Ashley-Cooper, who is enjoying the atmosphere in Birmingham...

While we continue building up to this match, we've also got a whole pile of reaction to last night's titanic battle for you to work your way through this morning...

• Wales legend Sir Gareth Edwards says England 'panicked under pressure'.
• England coach Stuart Lancaster has said it was the players' choice to turn down that late kick for goal, while Wales boss Warren Gatland described it as "brave".
• Our chief sports writer Tom Fordyce described the match as breathless chaos and impossible composure".

Uruguay coach Pablo Lemoine has made five changes to the side beaten 54-9 by Wales in Cardiff last Sunday.

There's one alteration to the backline, with experienced Leandro Leivas replacing Santiago Gibernau.

Lemoine has changed two thirds of his front row, as loosehead prop Mateo Sanguinetti and hooker German Kessler come in for Alejo Corral and Carlos Arboleya.

Franco Lamanna comes into the second row for Jorge Zerbino and Juan De Freitas will play at blindside flanker, allowing Juan Manuel Gaminara to move to number eight.

It's a very different Australia side to the one who beat Fiji 28-13 in Cardiff on Wednesday. Coach Michael Cheika has made 14 changes to keep his players fresh.

It would have been 15 had replacement prop James Slipper not suffered a head injury against Fiji - his unavailability means that Scot Sio retains his place.

A peek inside the Wallabies' dressing room at Villa Park...

The match in Birmingham is the first of our Sunday treble header - and, as always, you can follow all of the action right here throughout the day.

From 14:30 BST, Scotland take on the United States in Pool B, and at 16:45 BST you can follow live coverage of Ireland against Romania from Pool D.

It's another Rugby World Cup feast.

Today we take a second look at the group's third contender - Australia.

The Wallabies, who saw off a plucky Fijian challenge in their World Cup opener on Wednesday, take on Uruguay at Villa Park from 12:00 BST.

An opportunity to wrack up the points difference, or can the South Americans spring a surprise?

Let's find out...

After an unforgettable night at Twickenham, Pool A has exploded into life.

England, the hosts, the favourites to progress to the quarter-finals, face an uphill battle to squeeze through.

Wales, injury strewn and with backs against the wall, find themselves in the box seat.

Odds have been defied, tables have been turned.

Image source, Getty Images