Conversation so far:
what was Aeschylus' influence on greek drama and culture?
Aeschylus added a second actor, allowing for greater dramatic variety, while the chorus played a less important role.
how was culture involved?
Are there any other interesting aspects about this Aeschylus article in addition to adding a second actor, allowing for greater dramatic variety, while the chorus played a less important role?
Aeschylus is also said to have made the costumes more elaborate and dramatic
what was special about the costumes that Aeschylus made more elaborate and dramatic?
Aeschylus would have his actors wear platform boots to make them more visible to the audience.
what did people say about the platform boots and dramatic costumes that Aeschylus had his actors wear?
According to a later account of Aeschylus's life, as they walked on stage in the first performance of the Eumenides, the chorus of Furies were so frightening

Question: what was frightening about it?
Self-contained rewrite: what was frightening about the chorus of furies accoding to a later account of Aeschylus's life?