Wagneria!

As a prelude to the merriment of WagnerWorldWide, here is Clément Doucet's immortal Bayreuthian medley "Wagneria," as orchestrated by Morten Gunnar Larsen and executed by his Ophelia Orchestra. You can buy a crisp recording of the piece on iTunes; it has given me no end of joy. And here's the original, recorded by Doucet in 1927: 

Wagneria

Doucet also wrote "Isoldina," which Marc-André Hamelin and Alexandre Tharaud have lately taken up. In the same vein is Donald Lambert's astounding "Pilgrim's Chorus."