Just yesterday, OC spake about how opera died of natural causes in the first decades of the XX Century but it's no big deal because there's nothing to worry about, 350 years of masterpieces are still waiting to be fully appreciated (such as the delightful Don Calandrino unearthed by Maestro Muti and introduced back to audiences last year in Salzburg). That's OC's definition of "new music" -- as much we find John Adams interesting, no disssing intended, we'd still rather check out some lost Cimarosa.
Now we read that La Fuga in Maschera, an opera by Gaspare Spontini considered "lost", has reemerged from centuries of oblivion and will be staged @ Festival Pergolesi Spontini in 2009. It debuted at Carnevale in the year 1800 in Naples.