The scoreline against Dortmund would have been no cause for celebration, despite Arsene's birthday.
Arsenal slumped to a 2-1 defeat on Tuesday evening, their first since their opening day humiliation against Aston Villa, as Borussia Dortmund out-gunned the North Londoners in the third round of Champions League group stage competition.
Henrikh Mkhitaryan gave the Bundesliga represenatives an early lead after Jurgen Klopp's men capitalised on an Aaron Ramsey defensive error, however, Olivier Giroud smashed home a volleyed equaliser into an open goal just before the break. Robert Lewandowski, quietened by England in World Cup qualifiers, had a more joyous return to the capital, though, as he secured a winner for Borussia.
Arsenal not only lost the fixture, but also their supremacy in the group as they now are equal on points with Dortmund and Napoli; two clubs they have to compete against away from home in the remaining dates of the Group F calendar.
It could have been so much different for the Gunners as, had they emerged victorious, their progression into the knockout stages of Europe's premier tournament would have been almost guaranteed… and the win would have provided manager Arsene Wenger with a perfect birthday wish; three points.
As it were, Lewandowski, Klopp and co blew out his candles and stole the victory, but not before Arsenal and the Emirates Stadium got a chance to honour Wenger turning 64 in their own way, by pumping the song below out to the sell-out crowd.