I heard a single guitar enter my headphones like a dripping tap, tiny and inconsequential. Then a couple of humble trumpets in whispered harmony. Then another guitar and some mallet percussion, then a wave of rising strings. The music was snowballing, gathering mass. Gradually it went from a single tumbling flake to a rumbling white sphere, powered uphill by the sudden introduction of military drums and trumpets that babbled joyously over the three chord melody, rising, always rising, optimistic and unstoppable. It remains one of my favourite album introductions of all time.