Videoclip from Dubliners / The Dead by James Joyce

                                                         http://youtu.be/RSTp3z-F8r0
Hi guys,
Please have a look at the final monologue of The Dead from the collection Dubliners by James Joyce.
I have found a very rare version dubbed in Italian. It's terrific! In the above frame you can see Greta and Gabriel in their hotel room just after the party. Before going to bed she has told Gabriel about Michael Furey - a memory coming from the epiphany caused by a song listened at the party. Now Gabriel is having his own epiphany...
Click on the link and enjoy!
Does anybody know what an epiphany is?
What is the etimology of this word?
Prof Manno