Lionel Messi scored a marvellous hat-trick as Barcelona got their Champions League campaign up and running with a 4-0 win over PSV at Camp Nou.
Barca were off the pace for much of the first half of Tuesday's Group B clash, but Messi broke the deadlock with a trademark free-kick.
They moved through the gears after the restart but found PSV dogged in defence, with two further excellent goals needed to make the points safe.
Ousmane Dembele doubled the lead with an outstanding individual effort and Messi fittingly had the final say, completing his hat-trick by scoring either side of a red card for Samuel Umtiti.
Lionel Messi opened his Champions League goalscoring account with a hat-trick
PSV had the better of the opening stages and Gaston Pereiro powered a shot over the bar and Steven Bergwijn curled narrowly wide on the counter with Philippe Coutinho heading over at the other end.
Luis Suarez fired into the side-netting as the hosts struggled to find their rhythm but a surging run forward from Dembele led to the free-kick from which Messi sparked them into life.
Ousmane Dembele made it 4-0 for Barcelona
Dembele was fouled by Nick Viergever and Messi nonchalantly curled the ball into the top-right corner beyond a helpless Jeroen Zoet.
PSV, to their credit, did not allow the floodgates to open in the immediate aftermath, though a flying Zoet save was required to tip over a curling effort from Coutinho two minutes before the hour mark.
Zoet was beaten all ends up as Suarez dug out a marvellous lob from the edge of the area, only for the Uruguay international to be cruelly denied by the bar.
But Barca's second did eventually come in similarly superb style.
Dembele wonderfully turned two PSV players before running into space and unleashing a right-footed effort that beat the outstretched arm of Zoet, who was soon picking the ball out of his net again, as Barca finished with a flourish.
Ivan Rakitic lifted a delicate ball over the PSV backline that Messi dispatched with a fine first-time finish on the run to make it 3-0 and, after Umtiti received a second yellow for impeding Hirving Lozano, he latched on to a clever Suarez flick and emphatically capped off his treble.