Messi opened scoring with low shot
Argentine dinked a world-class second
Neymar clean through for third
Pep Guardiola's inside knowledge may pay off after all. The Bayern side are closing down Barca's keeper and back four instantly in numbers. So far Marc-Andre ter Stegen and Javier Mascherano have both kicked it out of play under the pressure.
Mark Lawrenson
Football Analyst on BBC Radio 5 live
"Judging from the opening minutes, Bayern are going to try and press Barcelona in every area of the pitch. That is going to take a huge amount of physical effort and mental concentration.
"It looked like Jerome Boateng laid a hand on Luis Suarez as he broke into the box there but I'm not sure it was enough to bring the Uruguayan to ground."
Andy West
European football writer
"The initial assumption is that this move has been taken in an attempt to head off a players' strike which had been threatened for that weekend.
"Players are unhappy with some terms of the deal, including the low percentage of revenue on offer to lower league clubs.
"The issue of TV rights is a long running one with most people recognising that Barca and Real receive far too much at the moment. Realigning it is not easy though."
3-4-2-1? Er, pass. I'm not sure how Bayern Munich are playing. It's tying Gary Neville's head in a knot so it's way beyond me.
However they've lined up, Luis Suarez gets behind them and Jerome Boateng gets hands on, pushing him over. It's a soft challenge but could easily have been given on another day.
Image source, Bayern MunichSome welcome for the players tonight at the Nou Camp
Bayern Munich tweeted , externalthis picture from the Nou Camp as the teams walked out with the cheeky caption "us too".
Mark Lawrenson
Football Analyst on BBC Radio 5 live
"Bayern Munich have immediately pushed three men forward to try and force Marc-Andre ter Stegen kick it out long from the back rather than allowing the Barcelona goalkeeper to build the move with short passes."
The first tactical tweak of the night. Pep Guardiola has started right-back Rafinha as a left-sided centre-back in a back three. Maverick.
Is that to counter Lionel Messi cutting inside? Bayern start pressing very high up the pitch, hunting in packs. The bus has not been parked.
Let the games begin! This would have made a great final but we are under way in the semi-final.
Image source, APJust a reminder - Neymar, Luis Suarez and Lionel Messi have scored One-Hundred-And-Eight goals between them this season. 108!
Few footballers getting excited for the match...
QPR striker Charlie Austin tweeted: , externalBarca 2-0 Suarez to run the show.
Hull City winger Robert Snodgrass posted:, external Barca 3-1 tonight.
Pep Guardiola very humbly waited until the end of the anthem and hoo-ha to casually walk out and take his seat in the Bayern dugout. No milking it from him.
Neil Lennon
Former Celtic manager on BBC Radio 5 live
"If anyone knows how to stifle Barcelona it is Pep Guardiola but his problems will be where he will counter-attack if he attempts to contain the Catalans.
"Are Bayern's two full-backs Juan Bernat and Rafinha good enough to get down the flanks and give Barca something to think about?"
Barcelona: ter Stegen, Dani Alves, Pique, Mascherano, Jordi Alba, Rakitic, Busquets, Iniesta, Messi, Suarez, Neymar. Subs: Bravo, Xavi, Pedro, Rafinha, Bartra, Adriano, Vermaelen.
Bayern Munich: Neuer, Rafinha, Benatia, Boateng, Bernat, Alonso, Muller, Lahm, Schweinsteiger, Thiago, Lewandowski. Subs: Reina, Dante, Javi Martinez, Pizarro, Gaudino, Gotze, Weiser.
Referee: Nicola Rizzoli (Italy)
Players in the tunnel, the famous old 'Barca' song pumped out of the speaker, 'We are ready' spelled out in the stands [see 19:38].
A stunning scene.
Image source, AFPFergie's treble winners, greatest ever?
Eyobel gomini: Fergie babies, Cole & Yorke, Super Sub Ole and Teddy...That was the best CL winning team!
SamadGigii: Manchester United 07-2011? semi-finalists, two finals and one win and plenty of league titles? Second only to arguably the greatest club side ever.
Phil Hopkin: But how can you mention an Arsenal team that got nowhere near to winning a European competition? Barca 09-12 or Bayern 12/13.
Get involved via #bbcfootball, external on Twitter, 81111 on text and the BBC Sport Facebook page., external And you can place your vote on the right-hand side of this page.
He's no Ronald Koeman though is he?
Almost time to get this show on the road. It may be footballing suicide but come on Pep, have a go at your old side tonight. Get after them!
European football writer Andy West at Nou Camp
"Barca's players were just practising their free kicks from outside the box. They all missed, except Gerard Pique. I don't think that'll be enough to get him to take one during the game though.
"Having said that, he is currently having Barca's best goal-scoring season for a defender in two decades..."
Image source, @coveringfutbolCovering Futbol on Twitter:, external Instructions on one of the 95,000 cards at Camp Nou tonight for pre game mosaic
Image source, Getty ImagesSearch the internet for praise of Lionel Messi and you'll blow up your hard drive. It's rare to find a quote about Barcelona's number 10 that makes you smile - but I liked this one, external from Bayern's former Barca midfielder Thiago this week.
"He's spectacular, incredible. He's playing further from goal and he's still scored 40 in the league. If he played in goal he'd score 25."
That we would like to see...
Mark Lawrenson
Football Analyst on BBC Radio 5 live
Image source, Getty Images"If manager Carlo Ancelotti did not think that Gareth Bale was contributing he would not pick him, I find it very strange, it is almost like a witch-hunt.
"If Real Madrid made him available for transfer the top four in England and most of the top clubs in the rest of Europe would all try to sign him. Has he become a bad player? Has he heck.
"He has just struggled in the shadow of God - as Cristiano Ronaldo thinks he is."