Knife cut in to opera

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I EXPECT all artists, over time, to progress their music, to experiment, to evolve - but opera?
I have to say I wasn't expecting bird-faced knob-twiddling siblings The Knife to craft an opera based on the life and work of Charles Darwin, but, as they say, nature abhors a vacuum, so someone was bound to do it sooner or later.
And better them behind Tomorrow, In A Year than Girls Aloud, hey?
And alongside cohorts Mt Sims and Planningtorock, the Scandanivian dance duo have had a pretty good stab at it - although opera purists would likely disagree.
The traditional 'fat lady singing' vocals associated with the genre are offset by unsettling electronica, animal noises and extended instrumental interludes, occasionally bursting forth with gloriously epic tracks like Variation Of Birds, Annie's Box and Colouring Of Pigeons.
So if you're looking for something a little different and a bit challenging to listen to, Tomorrow, In A Year is surely the natural selection.