This is a list of hard rock songs about supernatural dream experiences and similar. There is some overlap in the categories, some of these songs are specifically about lucid dreams, some are more ambiguous. I've marked personal favorites with * and **, though I guess this makes a disturbing psychological profile. With a couple of exceptions, if I don't like the song I left it off the list.

Encounters with ghosts, demons, or other spirits:

Megadeth - Lucretia *
Metallica - All Nightmare Long
Iron Maiden - Lord of Light
Iron Maiden - Twilight Zone
Iron Maiden - Prodigal Son
Iron Maiden - Purgatory
Iron Maiden - Dance of Death
Black Sabbath - Too Late (with Dio, not the earlier song with Ozzy with the same title) *

Spirit beyond life and death:

Live - Lightning Crashes *
Iron Maiden - Out of the Shadows
Iron Maiden - The Reincarnation of Benjamin Breeg
Iron Maiden - The Isle of Avalon
Iron Maiden - Starblind *
Iron Maiden - If Eternity Should Fail
Soundgarden - Room a Thousand Years Wide *
Chris Cornell - Seasons
Scorpions - Lonesome Crow *
Tool - Pneuma *

Other songs about lucid dreaming or experience of spirits:

Queensryche - Silent Lucidity
Black Sabbath - Lord of This World
Black Sabbath - Master of Insanity
Heaven and Hell - Fear
Heaven and Hell - Breaking into Heaven
Iron Maiden - Deja Vu
Iron Maiden - Dream of Mirrors
Iron Maiden - Mother of Mercy
Tool - Descending *
Stevie Nicks - Edge of 17
Soundgarden - Beyond the Wheel (Live, 1993) **
Dio - Dream Evil
Death Angel - Seemingly Endless Time
Danzig - End of Time *

Prayers and Eulogies:

Dream Theater - Pull Me Under **
Iron Maiden - Revelations
Iron Maiden - No Prayer for the Dying
Scorpions - Is There Anybody There?
Tool - Wings for Marie
Scorpions - We'll Burn the Sky
Chris Cornell - Like a Stone (AOL) *