Declan O’Rourke and I are sitting on the rocks overlooking the sea outside Dunguaire Castle in Kinvara, Galway. The laid-back singer – whose grandfather once lived in a cottage across the road from the castle – recently moved into a house near the town. These are very busy times indeed for O’Rourke, who has just released his second album Big, Bad Beautiful World, the follow-up to the acclaimed Since Kyabram, which went double platinum and catapulted him to the front rank of Irish singer-songwriters.