Arsenal’s high-voltage football was back, restored by a very expensive jolt of electric shock therapy.
Pierre-Emerick Aubameyang marked his debut with a goal and Henrikh Mkhitaryan excelled as Aaron Ramsey scored a hat-trick.
Mesut Ozil sparkled after committing his future to north London and the Emirates Stadium basked in a giddy glow.
Nothing, it seems, can banish memories of defeat at Swansea and a moody Chilean quite like two new forwards worth more than £90million and a creative genius on £350,000 a week.