That'll delight a friend of mine who's just signed up to Sky Arts!
At the end of the Manon Lescaut on 3Sat the other evening, they mentioned a Summer night concert at Grafenegg this coming Saturday 11th. (It's on from 20.15 - 21.35 CET). Googling it to find out more, ie if it included opera and if so, who was appearing, one of the links took me to this website.
http://www.klassikkalender.de/TV-Programm/te/100
It's even broken down into categories, so you can click on Opera, concerts, ballet, chamber music etc. Assuming it's an ongoing thing, that solves our problems with Astra. Now all we need is a similar one for French television!
By the way, I'm finding that France 2 isn't showing an extended EPG on my set up any longer, although the others are. Is that general, or is anyone getting the full 7 days still?