This was a German procession which - despite Scotland's deficiencies - will galvanise the host nation into believing again.
When Nagelsmann took over of the national team in September, the three-time winners of this tournament drew with Mexico and lost to Turkey and Austria in an inauspicious start. The public were far from convinced.
However, victories over France and the Netherlands helped carry them into this on a wave of hope.
Wirtz's early effort was the culmination of patience and territory dominance. Strikes from Musiala and Fullkrug emphatic evidence of a team brimming with confidence.
The former was unplayable at times, and Toni Kroos was back pulling the strings in midfield.
The stats behind this obliteration were frightening. A 94% passing accuracy, 43 attacks, 19 attempts, 655 passes completed to Scotland's 193. They also covered 9km more than their beleagured opponents.
There will be plenty looking nervously at the hosts this summer.