So no Stairway to Heaven?
Hotel California? Freebird? Layla?
The 6 minute requirement assumes extended quality, just as an Epic Poem assumes the same.
Epic Popular Songs
The Epic Poem stands as the highest literary expression.
To compare lowly rock and pop songs beggars a response.
But so be it. Your nominees have to be at least 6 minutes in length, have a notable instrumental solo, and have lyrics parsing a freshmen college standard. No lists of tress, or multiple battles or dedications to Queens most Glorious.