I know Letter X a little Glenn though I haven't played any of it in a long time. Wasn't Michael Bormann in the band for an album? Now that I'm listening to this song I can see I need to try this album again. Cool band indeed.
Only one band came to mind, and I do not know if they are obscure in this forum. Sortilege from France. Trad metal from the 80's. Anything by them but Metamorphose in particular.
One of the best progressive metal albums I've ever heard. I really wish this band would release another album, but I highly doubt it...
Lemur Voice - Insights
Twilight Guardians- Wasteland.
Timeless Miracle- Into the Enchanted Chamber.
Axxis- Eyes Of Darkness. Kingdom of the Night. Time Machine. Paradise In Flames.
Domain- Last days of Utopia
Heed- The Call
Iron Mask- Hordes of the Brave. Shadow of the Red Baron.
Magic Kingdom- Metallic Tragedy.
Full Strike- We Will rise.
White Skull- Tales from the North. Public Glory Secret Agony.
Digital Ruin- Listen
It's so cool seeing DR on your list because the lead guitarist Dave Souza is one of my oldest friends since high school and I was in my first band with him called Syrinx.
P.S. I can work on a Digital Ruin reunion show for a future ProgPower
Vauxdvihl- To Dimension Logic
The Quiet Room- Introspect
Cea Serin- Where Memories Combine
What about Pathos - Hoverface? Unless you think they're too thrashy, they were a great band. Their third album, Katharsis, was also good.Any more trad power type releases?