Here it is: Majesty Snowbird. It is not a studio version, but for those hardcore Sufjan fans it won't matter at all. This is an epic song, 10 minutes, and it doesn't even feel like it's that long. The song is very majestic (as one would think). I don't know how he does this...it's absolutely gorgeous. I'll listen to anything this man makes. I'm looking forward to anything he does ever.
Also, I have his live performance at the Triple Door. All of these songs are highly recommended. I wish I could see him live very badly. Please listen:
MP3: Sufjan Stevens - Majesty Snowbird
Bonus MP3: Sufjan Stevens - Sister Winter
Live! At the Triple Door
Casimir Pulaski Day
The Tallest Man, The Broadest Shoulders
The Praire Fire That Wanders About
The Predatory Wasp of the Palisades
The Man of Metropolis Steals Our Hearts
John Wayne Gacy Jr.