Ten years on from their garlanded debut, and four years since their last album, much has changed for Yeah Yeah Yeahs. Singer Karen O has moved to LA from her native New York, and then come back. Guitarist Nick Zinner has taken time off to indulge his passion for photography. Drummer Brian Chase has, through the simple mechanism of growing both his hair and beard, transmogrified into Warren Ellis of the Bad Seeds. The question is, in the face of these various transitions, what has changed musically for everyone’s favourite NYC boho art-rockers? The answer – and apologies if this…