I recently got my hands on Cowboy Beebop (the series) and seeing Edward and Ein reminded me that they appeared in the earlier Symphonies. So I decided to reread Symphony 1 (and the others will probably follow).

It's interesting to see just how far ahead Gryphon and Co were foreshadowing some things. For instance in Movement 3 (A Rose for the New Year) I spotted these:

(Eris to Zoner, durring a flashback to how he first found Utena)

"The Tenth World is in a mess," Eris told him, "and the Council of the Aesir are still trying to figure out what to do about it. They'll probably end up sticking some poor jerk with going there and finding out as a Trial of Ascension. "

And later, a bit from Miki's perspective while preparing to ring in the new year:

There was a chance encounter with one of Corwin's schoolmates, a very pleasant, polite seventh-grade girl who was called Fuu, and whose last name he could not remember to save his life.