[Update] The official version of this track has been released with the new OST and it’s called:
a／z-p1@n0：5罪vers
I keep finding these piano BGM. Anyway, this one plays in Episode 8 of Aldnoah.Zero when Inaho and Princess Asseylum enjoy the nice ocean view while poor Slaine gets tortured in some Orbital Knight dungeon. Quite the contrast, which is also reflected in the song.
As always, cover done with 99% ear accuracy.
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