What is the epic song of a group?

In no particular order....
Eagles - Hotel California
Molly Hatchet- Gator Country
Skynyrd- Free Bird
Patsy Cline - Crazy
Paul Simon - Late in the Evening
Frank Sinatra - That's Life
David Bromberg - Cocaine Blues
Linda Ronstadt - Long Long Time
Stuff - Do You Want Some of This?
Doc Watson - Sadie
Eris Clapton - Layla
New Grass Revival - Lee Highway Blues
Bobby Bland - Stormy Monday Blues
Temptations - My Girl
Wilson Pickett - Mustang Sally
Elton John- Take Me to the Pilot