Barca are now overwhelming favourites to replace Madrid as Spanish champions after thrashing their arch rivals 6-2 at the Bernabeu in a stunning display of attacking football.

Madrid`s defence simply had no answer as the capital club shipped six goals at home for the first time in almost 60 years, and left Barca on course for an historic trophy treble this season.

To retain hope of achieving that feat, though, the Catalan giants must overcome Chelsea in the second leg of their Champions League semi-final at Stamford Bridge on Wednesday.

Barca were held goalless at home in the first leg, but they will have taken great confidence from their display against Madrid and former Arsenal hitman Henry wants to see more of the same on his return to London.

"Against Chelsea we must have another incredible game," said Henry, who scored two of his side`s goals at the Bernabeu, including an 18th-minute equaliser after Gonzalo Higuain had put Madrid ahead.

"We are team who fight. After we went 1-0 down we didn`t know how things would finish up. So we had to fight, and more so away from home."

Barca defender Gerard Pique added on his club`s website: "We will go to Chelsea looking for the win like we did here. It`s the only way we know."

Pique also got his name on the scoresheet at the Bernabeu, and his 82nd minute effort was Barca`s 100th league goal of the season - moving them to within seven of the single-season record set by Real Madrid in 1989/90.

Samuel Eto`o, who is the leading scorer in La Liga this season with 27 goals but for once did not manage to get his name on the scoresheet, warned his side not to get too carried away with the victory.

They may have one hand on the Primera Division title, but, with huge matches coming up in the Champions League and Copa del Rey final, Eto`o insists they cannot relax.

"We still aren`t the champions. We have to treat the other teams that are coming up with respect," he said.

"But it`s true they (Madrid) need a miracle to stop us. Now we have to forget about this win and think about Chelsea, where we must go out with the same desire and with humility, as if this match didn`t happen."

Barca president Joan Laporta added: "It will be a very difficult game in London. To get through to the final we will have to make heroic effort. It will be difficult, but this Barca side is capable of everything."