Of course it's just my fancy, but I imagine the Ered Luin to be teeming with elves, refugees from Lindon, and Ossiriand... the mountains of Song?. (Someone will probably correct me.) And while settlements may be few, the charm of the wilder elves was that they wandered and sang at will.
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...down to the water to see the elves dance and sing upon the midsummer's eve.
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