Probably my favourite island song is Island in the Sun -

"Oh island in the sun
Willed to me by my father's hand
All my days I will spend in praise
Of your forests, waters and smiling sands"

(if that's the words - it's one I've heard in the distance, in that sexy Caribbean accent, all my life).

Then there's The Rose of Arranmore:

"My thoughts today, though I'm far away
Live on Tirconell's shore,
The salt sea air and the cailins fair
And lovely green Gweedore..."

(People in the Aran Islands off Galway sing it too, though it's a Donegal song.)