There are several songs that reference Greek mythology. Here's some that i know of:
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The only way that Pandora Jewelry relates to Greek mythology is the name 'Pandora', from 'Pandora's Box'.
Klôthô or Clotho whose name means "spinner" is one of the Greek goddesses called the Moirai, or Fates.
There is no Eric in Greek mythology.
Boltar is not from Greek mythology.