These songs are each epic in the classic sense of the word, not just the surfer slang sense of just really awesome.

Iron Butterfly - In A Gadda Da Vida
Black sabbath - Warning
Rush - Working Man
Deep Purple - Child in Time
Led Zeppelin - The Rain Song - No Quarter
Queen - Bohemian Rhapsody
Pink Floyd - Echoes
Yes - Close to the Edge
Jane's Addiction - Three Days
Metallica - Fade to Black
Steve Vai - For the Love of God
The Moody Blues - Nights in White Satin
Creedence Clearwater Revival - Suzie Q
The Doors - The End
Billy Thorpe - Children Of The Sun
Whitesnake - Still Of The Night
Prince - Batdance
Steve Miller Band - Fly Like An Eagle
Megadeth - Peace Sells
Krokus - Screaming In The Night