The Warner Classics Autograph Anniversary box (8 CDs plus 1 DVD) is available for buying at the Arcadia Opera Shop, located at the State Opera House in Vienna. Considering that the release date is April 6, the nice surprise of being able to buy it one month in advance may be related to Angela's presence in Vienna. Maybe an event (aka signing session) will be organized in the near future? We'll see.
If you're in Vienna, go buy the box. It's worth millions!
