Keane bids adieu to balladry and ushers in a different style -- '80s pop -- with Perfect Symmetry.

While the album isn't solely devoted to exploring that new genre, it's certainly the focus, and "Spiralling" appropriately kickstarts the set with whooping vocals and retro synthesizers.

"When we fall in love," sings Tom Chaplin in his stadium-sized voice, "we're just falling in love with ourselves." Coming from the same mouth that once crooned the earnest strains of "Somewhere Only We Know," those lyrics are wholly different -- a sign that four years spent in the shadow of U2, Coldplay, and other like-minded bands have convinced Keane to make their own Achtung Baby.

Of course, that album saw U2 turning sonic experimentation into something entirely inventive, which Perfect Symmetry doesn't quite accomplish with its own mixture.

This isn't quite art, after all; it's mostly just fun, shot through with a self-consciously cheesy approach that's engineered to sound little like the department-store rock of 2004's Hopes and Fears.

"Fun" seems to be at the top of the band's agenda, though, and Perfect Symmetry succeeds in doing away with most of the pre-conceived notions that accompany Keane records.

The "old" sound doesn't even surface until midway through the album, when the album's title track offers up a combination of sparse piano notes (later giving way to dense, double-fisted arpeggios) and a meteoric chorus.

But that's the exception, not the rule, and Perfect Symmetry sounds more comfortable during its truly unexpected moments: the spacy blips and bleeps of "You Haven't Told Me Anything," the synthesized anthem "Again and Again," and the energetic "Wooooooh!" that opens the entire album.

The band's biggest strength remains Chaplin's ability to turn a melodic phrase with grace and dexterity, which fails to lose its vitality no matter the musical context, but Keane's willingness to take these left-hand turns deserves its own share of applause.