What is the epic song of a group?


I will start. I vote for Stairway to Heaven for Zep. Its grand with a great finish. I will throw in Salisbury by Uriah Heap. Ok lets see some posts of what you think is a groups masterpiece.
128x128blueranger
The Doors - Light my Fire.
The Cream - Sunshine of your Love.
The Who - Won't get fooled Again.
The Doors - Light my Fire.

+1.  The full 7 minute version, of course, featuring the amazing keyboard work of the late Ray Manzarek.

Regards,
-- Al 
Robin Trower - Too Rolling Stoned
ACDC - The Jack
Zappa, that twisted genius reinvented himself so many times who the hell knows.
Perfect Alice Cooper tune.  Alice himself said that was the song he most identified with.