Echo-o-o was a nymph from Greek myths-myths-myths...but that's the only thing that is agreed upon-on-on. Depending on where the story originated-ted-ted, there are a few instances that turned this nymph into nothing but a rebounding voice-voice-voice.
In one-one-one tradition, Echo rejected the god Pan's attentions and he was so-so-so enraged that he had her killed, leaving only-ly-ly her voice.
In another tradition-on-on, Hera took the nymph's voice for-for-for helping Zeus have affairs with other nymphs. She was only able to repeat-peat-peat the words of others from time to time.
In other lore-lore-lore, Echo was said to have been madly in love-love-love with Narcissus, but when the love went unrequited, she wasted away-way-way into nothingness leaving only her voice behind-hind-hind.
Yeah, I just did that.
Happy E to Z!
Shameless Plug Time
She has a destiny so great that even the gods fear her...