Orpheus' mistake was looking back at Eurydice, breaking the condition set by Hades.
Orpheus' mistake was that he looked back at Eurydice before reaching the upper world, breaking the condition set by Hades and causing Eurydice to be taken back to the underworld forever.
This action demonstrates the importance of trust and following specific instructions in ancient myths.
Orpheus' love for Eurydice, his musical talents, and his journey to the underworld are central elements of this tragic myth.
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