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
War - All Day Music
Johnny Guitar Watson - A Real Mother For You
Bruce Hornsby - The Way It Is
Elton John - Levon
Randy Crawford - Knockin' On Heaven's Door
Stanley Clarke - East River Drive
Brad Mehldau - Since I Fell For You
The Crusaders - Hard Times

Gene Clark - Strength of Strings
Pink Floyd - Echoes
Neil Young - Cortez the Killer
Elton John, “Burn Down the Mission”
Billy Joel, “We Didn’t Start the Fire”
and +1 for the Beatles, “A Day In The Life”