Lyric discussion by Achmode 

Well, looking about, it seems there are a couple of places called San Sebastian (one of which is in Spain, so the whole sun thing would fit quite well with that perhaps).

So, the song could be about that as well, perhaps a place he liked to visit back when he was younger, or judging by the lyrics and other comments, about a girl he met while he was there.

Though I wouldn't think of Sonata Arctica to sing about somehting as tacky as a holiday romance, so perhaps it's something much deeper than that!

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