A couple of former Manchester City players enter the fray as Eric Garcia comes on for Marcos Alonso while Ferran Torres replaces Raphinha.

Oooh, Sergio Busquets almost gets a pass between two Real defenders to put Raphinha through but it is intercepted just in time.

Barcelona make a change as they look to try and get back in this. Franck Kessie makes way for Ansu Fati.

Karim Benzema scored a hat-trick at the weekend and he is on for another one today.

At the moment, Barcelona seemed stunned. It is all Real Madrid as they look to add further goals.

Richard Winton
BBC Sport at Camp Nou

Xavi is cajoling his players to lift it but Barca are in a hole now. Two goals to force extra time. Right now, even one looks beyond them.

Vinicius Junior is fouled inside the box and Real have a penalty!

Barcelona are ramping up the pressure as they look to get back level on aggregate and Raphinha has space on the right side of the box but he drives high over.

Richard Winton
BBC Sport at Camp Nou

There are more goals in this…

Now Thibaut Courtois parries away an angled Alejandro Balde drive.

You can't take your eyes off this game!

Richard Winton
BBC Sport at Camp Nou

Benzema and Modric might have a combined age of about 126 but they were far too sprightly of both body and mind for Barcelona there. Devastatingly simple goal.

Luka Modric is booked as he channels his inner Karate Kid, challenging for the ball with his boot high.

Real Madrid are one up on the night but the tie is level on aggregate. If it remains like this then we will go to extra time and penalties.

It is insight like the below that half time is made for!

Barcelona will come out firing in the second half, you'd imagine. They'll be wondering how they are a goal down in this game.

Richard Winton
BBC Sport at Camp Nou

Apropos of nothing in particular, an international footballer disclosed recently that David Alaba is the best-smelling player he has ever faced. Quite the accolade.

Waiting for the winner of tonight's match in the final is Osasuna, who edged Athletic Bilbao 2-1 on aggregate to progress.

The two sides played out a hugely entertaining 1-1 draw in the second leg yesterday, Bilbao levelling the tie through Inaki Williams in the first half before Pablo Ibanez's superb volley sent Osasuna through.

It will be their first appearance in the Copa del Rey final since 2005.

The whistle goes for half time prompting boos from the home fans, who feel they should have had a penalty before the Real Madrid break.

Richard Winton
BBC Sport at Camp Nou

Well then, that’s quietened the place. Barca’s defending has been on the brink of calamity for most of the half so it’s not a huge surprise. But what do both teams do now? Have a go, or play cagey? Think we all know the answer…