‘Turning it up to eleven’: Spinal Tap returns

“There’s a fine line between clever and stupid.” — Nigel Tufnel, This Is Spinal Tap.

I first encountered Spinal Tap at the age of nine, when they appeared in a season three episode of The Simpsons.

As a kid already immersed in the thunder of Metallica, Motörhead, Megadeth, and Black Sabbath,…