Bayern Munich destroy Barcelona in Champs League masterclass

The German champions execute a stunning 4-0 thrashing of mighty Barca in their semi-final first leg in Munich.

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(L-R) Barcelona's Argentinian forward Lionel Messi vies with Bayern Munich's defender Jerome Boateng and Bayern Munich's Brazilian defender Dante during UEFA champions league semi final first leg football match between Bayern Muenchen and FC Barcelona on April 23, 2013 in Munich. AFP PHOTO / ODD ANDERSENODD ANDERSEN/AFP/Getty Images

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Bayern Munich's French midfielder Franck Ribery (L) and Bayern Munich's Austrian midfielder David Alaba (R) celebrate a goal during the UEFA champions league semi final first leg football match FC Bayern Muenchen vs FC Barcelona on April 23, 2013 in Munich, southern Germany. AFP PHOTO CHRISTOF STACHECHRISTOF STACHE/AFP/Getty Images

Bayern Munich's players celebrate after scoring against Barcelona on April 23, 2013

Bayern Munich's players celebrate after scoring during their Champions League semi final first leg match against Barcelona on April 23, 2013

Bayern Munich players celebrate after scoring a second goal against Barcelona at the Allianz Arena

Bayern Munich players celebrate after scoring a second goal during their Champions League semi final first leg match against Barcelona at the Allianz Arena in Munich, on April 23, 2013

Bayern Munich's midfielder Arjen Robben celebrates scoring on April 23, 2013 in Munich

Bayern Munich's midfielder Arjen Robben celebrates scoring during their UEFA champions league semi-final first leg football match against Barcelona on April 23, 2013 in Munich, southern Germany. Bayern Munich won 4-0

Bayern Munich's Thomas Mueller (C) celebrates scoring a goal with Mario Gomez (2ndL) and Franck Ribery, April 23, 2013

Bayern Munich's midfielder Thomas Mueller (C) celebrates scoring a goal with teammates Mario Gomez (2ndL) and Franck Ribery during their UEFA champions league semi-final first leg football match against Barcelona on April 23, 2013 in Munich, southern Germany. Bayern Munich won 4-0

Bayern's Thomas Mueller (L) reacts after scoring the fourth goal in Munich on April 23, 2013

Bayern's Thomas Mueller (L) reacts after scoring the fourth goal during their UEFA Champions league first leg semi-final football match against Barcelona at the Allianz arena in Munich on April 23, 2013. Bayern Munich won 4-0