"Hall of the Mountain King" by SavatageSuch an underrated record, and it just feels ripe for the picking thematically.
Never heard of it, but the cover looks quite bad ass, i shall give it a listen! Look forward to seeing what you make.
My second one is going to be for Soliloquy for Lilith by Nurse With Wound, a great dark ambient album .
It's a verrrrrrrrry hair metal album, but some members of Savatage (including producer Paul O'Neil) went on to form Trans-Siberian Orchestra, and the kernel of that high concept, heavy guitar driven storytelling kinda starts with HotMK.