Watching Arcade Fire perform Neighbourhood 3 (Power Out) on Later with Jools Holland in May 2005, you could see what David Bowie was publicly getting so excited about. There is so much going on – busy, passionate and primal, but full of melody. An astonishing song… almost a rallying cry. “The power’s out in the heart of man/ Take it from your heart/ Put it in your hand”. And all delivered live in studio.