In ancient Greek mythology, Nereus was an aquatic deity of low importance(unlike Poseidon, the Olympian sea god).
He and his wife Doris,the daughter of Oceanus(all three seen above, in a picture taken at the reconstructed Pergamon Altar in Berlin) had 50 daughters known as the Nereids.
Nereids were seadwelling nymphs(note:nymphs in ancient greek mythology were mythical female spirits of the wilderness,representing the beauty and fertility of nature) often imagined as fish-tailed.The best known of them was Amphitrite,who became the wife of Poseidon,and Thetis who became the mother of Achilles, the great Trojan War hero.
The song about the Nereids above is a track taken from the third album of the greek band Daemonia Nymphe,a neofolk band who is known-mostly outside of Greece,though-for singing their songs in ancient greek(to be more specific,most of their lyrics are Orphic Hymns) and for using replicas of ancient greek music instruments.
Their homonymous third album(released in 2002) is the first to feature these replicas,enriching their sound and taking it to a whole new level.
Although i feel that the album that followed Daemonia Nymphe(Krataia Asterope,released in 2007) is a little bit better,i would strongly recommend this one as an introduction to this special band, one of the most substantial neofolk bands of our days.Album ripped from my personal collection(as most of the blog's stuff actually),enjoy.