Interesting the connection it bears to the ichthys; interesting name, vesica piscis (or pisces) interesting relation to Pythagoras, and a relation to music.
Interesting to see this symbol of unity/creative procreation or female divine sexuality (no kidding) being used as a form of subliminal advertising; the usual harnessing and marketing of it for sale or to sell stuff, -if a little more subtle about it; (it's their logo as well). -Monumental! The vesica piscis appears in this perfume advert (with the man inside it) at 0:41:
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