Postpublished at 16:42 British Summer Time 19 April 2015
Former Arsenal & Aston Villa defender Martin Keown
BBC Match of the Day at Wembley
"Despite his youth the size of this game has suited Jack Grealish down to the ground."
Villa come from behind to win at Wembley
Delph gets Villa winner after fine team move
Coutinho had opened scoring for Reds
Villa now face Arsenal in final on 30 May
Luke Reddy
Former Arsenal & Aston Villa defender Martin Keown
BBC Match of the Day at Wembley
"Despite his youth the size of this game has suited Jack Grealish down to the ground."
"His hair hasn't moved," says a colleague as Jack Grealish sees his number raised to depart the field. It's a fine bit of styling and he gets a peck on the cheek from Tim Sherwood. On is Joe Cole, ex-Liverpool. Experienced.
Jermaine Jenas
Former England midfielder on BBC Radio 5 live
"If Liverpool have any chance of getting back into this game, it will come through Philippe Coutinho. He sparked into life then to win that free-kick on the edge of the Villa box, but it wasn't one of Steven Gerrard's best efforts and it was easy for a keeper of Shay Given's experience."
Steven Gerrard stands over a free-kick in a perfect position for him 25 yards from goal. It beats the wall but is never beating Shay Given who can glare at the ball as it loops into his hands. Food and drink for Given. An early birthday gift. He is 39 tomorrow.
Liverpool, look one dimensional. A long ball to Mario Balotelli sees him flagged offside but their midfield looks fragmented and cutting edge in the final third is nowhere to be seen.
It seems Glen Johnson will occupy the right-back slot, shifting Emre Can into midfield. It's not clear if that will see Can play an advanced role or if Steven Gerrard will move further forward.
Glen Johnson is on for Joe Allen. Liverpool will wish they had Robbie Fowler on the bench...
Liverpool's last FA Cup semi-final meeting with Aston Villa arrived in 1996 when Fowler, a scourge for the Midlands club, did the damage with a brace in a 3-0 win at Old Trafford.
The Prodigy hit 'Firestarter' was number one in the charts and Fowler was certainly setting Villa ablaze.
A first change of the day for Tim Sherwood. Charles N'Zogbia has been solid enough but Scott Sinclair will come on. Sinclair netted a hat-trick at Wembley for Brendan Rodgers to get Swansea promoted to the Premier League remember.
Liverpool are getting Glen Johnson ready. Surely that will be for Emre Can?
Former Arsenal & Aston Villa defender Martin Keown
BBC Match of the Day at Wembley
"Alberto Moreno's tackle was inch perfect because Christian Benteke was just about to pull the trigger. It's about now that the Liverpool players will start to think, is this going to be another painful semi-final? Am I going out of this competition? This is when heroes are made."
Jermaine Jenas
Former England midfielder on BBC Radio 5 live
"Liverpool look tired to me. They have not got as much energy as Villa - and it looks as though they are lacking confidence."
Now we have a frenzy of football on our hands. Joe Allen to shoot from 18 yards, a stunning block on the edge of the area and Villa will break, Christian Benteke is slipped in, open your legs up and smash it son... no way. A wonderful sliding challenge from Alberto Moreno denies a wonderful chance.
It is perhaps easy to see why Liverpool are disjointed. Emre Can has spent much of the season in a back three, now he finds himself high up the field playing from full-back and his touch is not good enough to get Raheem Sterling in behind.
Liverpool recycle the ball and Can is at it again down the flank. Corner won as his cross finds a deflection. Steven Gerrard over it... flicked away by Ron Vlaar.
Phil McNulty
BBC Sport chief football writer at Wembley
"Aston Villa have an energy that Liverpool have never looked like matching so far. Big moments these for Liverpool and manager Brendan Rodgers - now they must show they have the steel to respond."
FA Cup build-up, a relegation battle, stressed over contract renewals of his star men, but Tim Sherwood still had the time to recently console a candidate he pipped to the Villa job.
Charlie Pye, aged six, from Leamington Spa, applied for the gig but Sherwood's spell at Tottenham last season ultimately saw him over the line.
Pye asked for a chocolate bar as a win bonus and a WWE wrestling figure as reward for taking over.
Sherwood wrote: "From your letter it is clear to see that you would indeed be an ideal candidate for the job due to your knowledge of the game - and your very capable backroom staff, of course!"
We enter the final quarter of normal time and in truth, a Liverpool response looks anything but forthcoming. What can Raheem Sterling muster, a gallop no less but he cannot outstrip Ron Vlaar. Liverpool are just not at it and as a ball drops for Fabian Delph in midfield Fabian Delph collects with four yellow shirts watching on.
Some handbags here between Martin Skrtel and Christian Benteke. Enough gents. This is not WWE.
Take a look at the game Jack Grealish is having down the Aston Villa left. Involved in both goals, the 19-year-old - hair slicked back - has had 54 touches of the ball and completed 96% of his passes.
Liverpool have a free-kick in a good area for Steven Gerrard to cross. He does, nicely, but no one can get a touch on it.
Liverpool, just cannot stem the tide. For every yard they run, Aston Villa cover three. They pass across midfield from left to right as Liverpool's midfield just watches on. This change of shape has not worked for Brendan Rodgers.
Both Don Welsh 1951-1956 and Phil Taylor 1956-1959 failed to land silverware.
Nick Kelly: Beautifully worked goal by Villa, Jack Grealish best player on the park at the moment.
Aidan Williams: Time for the Liverpool fans at Wembley to show their worth. Get behind the team.
Graeme Donaldson: I bet Tim Sherwood already has his cup final suit in for dry cleaning.
Really thought that was leading up to a gilet joke Graeme.
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Former Aston Villa manager John Gregory
BBC WM 95.6
"Villa have been dominating the game from the first minute. They're the ones that look in control of the match and there are more goals in this. Villa could embarrass Liverpool today if they continue to play like this. Liverpool's big players have been non-existent."
Kieran Richardson to make it three... over the bar. Again it was Jack Grealish bursting into the area and the tackle on him deflected the ball into Richardson' path 18 yards out.