There’s a reason the saying, “Don’t judge a book by its cover,” persists, though in this case, the ‘book’ is actually the latest chapter from venerable ’90s favorites No Doubt.

Amazingly garish cover art aside, the quartet’s new single, “Settle Down,” is actually of a quality tune. The six-minute (!) ska-pop song, produced by Mark “Spike” Stent, previews No Doubt’s first studio album in 11 years, Push And Shove, out September 25.

“Settle Down” debuted everywhere today, including the music video directed by longtime collaborator Sophie Muller. Ostensibly Muller was too busy working with Gwen Stefani and the boys to devote her visual talents to the other female-fronted, reunited ’90s band with whom she was closely associated (or I so gathered from this Twitter exchange with Garbage’s Shirley Manson).

The clip begins with each of the four members behind the wheel of a big rig — one Harajuku Girl is stowed in the back of Stefani’s ride — all headed toward a rendezvous point at which they break out the gear and rock out. My favorite part of the “Settle Down” clip (from which the screen shot is taken) comes around the 4:45 mark when Gwen has had enough of all the excitement, gives the camera some choice side eyeroll, and soldiers on. She’s ‘a rough and tough, and nothing’s gonna knock this girl down.’

Purchase No Doubt – “Settle Down” via iTunes, Amazon MP3.