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
Someone mentioned You Really Got Me for the Kinks.  I would say that was their iconic song, but I think their "epic" would be Waterloo Sunset.
Regarding Jimi Hendrix, I will have to disagree and say 1983 (a Merman I should turn to be).
For Hendrix it would have to be "Third Stone from the Sun. Starts out slow and easy. Then builds to an epic feedback solo.
Lots of great ones I see!

Pull me under - Dream Theater
Frankenstein - Edgar Winter
Snorting whiskey drinking cocaine - Pat Travers

Oh there are so many!