I don't know those two songs, but when I think relaxing and ethereal, I think Banco de Gaia.
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Stickerbrush Symphony from Donkey Kong Country 2
Porcelain - Moby
Erana's Peace - Heroes Quest (Quest for Glory)
Uncharted Worlds (galaxy map music) from the Mass Effect soundtrack
Since you mentioned a video game track, I'll say Epona's Song from LoZ OoT
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