Hot on the heels of “No Son of Mine,” Foo Fighters unleash another dose of Medicine at Midnight in the form of “Waiting on a War.” In stark contrast to the bludgeoning “final f*ck you to 2020” (UPROXX) of its predecessor, “Waiting on a War” is a sprawling melodic opus that gradually builds to a patented FF rave-up.

If “Waiting on a War” seems to have an especially emotional heft to its lyrics, well, that’s because it does. Dave Grohl recounts…