Royal Opera House – Etching by Phlegm I’m a big fans of Greek Myths. Phlegm was stated that this set was influenced by Greek Myths, Prometheus and Leda. Still, I don’t get which one is from myths, which one is Prometheus, but I believe the swan was from Leda myth. Maybe I have to go to London and see it myself to distinguish each part because this piece is contains so much details.