The latest chart monsters

IN an antiseptic boardroom sit three regular guys and one rock star. The normal guys are the guitarists and rhythm section of chart topping dance-rock band, Imagine Dragons. In Bono-shades and a vast, puffa jacket, the rock star is singer, Dan Reynolds.
Reynolds is transformed. Two months ago, doing press in London, he was soft spoken and stylishly scruffy, and seemed dazzled by the attention.