On the other side of the moonA song about an idealized, far-off place, real, imaginary or merely notional, often at a specific time. Often, the title will include the words "Somewhere" or "Out/Up/Over There". Compare "I Want" Song. If the "somewhere" in question is just anywhere that isn't home, it's a Wanderlust Song.
Ever so far, beyond the last little star,
There's a land, I know,
Where the good songs go,
Where it's always afternoon,
And snug in a haven of peace and rest
Lie the dear old songs that we love the best.
—"The Land Where The Good Songs Go" (by Jerome Kern and P. G. Wodehouse)