If one is bound to hear their voice, great danger awaits. According to Romanian legends, "Ielele" are evil spirits, hiding in the depths of woods and whose irresistible beauty lure men to an incessant dance, inevitably leading to their demise.
The name "ielele" is a derived form of the Romanian feminine personal pronoun ("ele", tr. "them"), in order to avoid using their real name, which would ultimately unleash their wrath.