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.
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Purple Haze - Jimi Hendrix                            Dark Star - Grateful Dead                              Satisfaction - Rolling Stones                        God Save The Queen - Sex Pistols              Horses - Patti Smith                                      White Room - Cream                                      A Salty Dog - Procul Harum                           Eight Miles High - the Byrd's                          Stolen Moments - Oliver Nelson