Yeah I liked the cover of "Mexican Radio". It was weird. At the time when I first heard it upon release, it just didn't sound like anything I'd ever heard before. That album was so diverse....you had heavy dirge-like songs with tympani and violins and female operatic vocals ("Rex Irae"), you had speedy thrash ("Inner Sanctum"), you had avante-garde stuff like "Tristesses De La Lune" and "Mesmerized", etc.....They covered so much ground on that album and some of it was really experimental and odd, and yet there was no mistaking that it was definitely Celtic Frost, because their sound and personality was stamped on all of it. I grew up worshipping stuff like that, and Voivod, and Metallica.....these bands who just didn't fit neatly into one small sub-genre, they'd branch out in all directions while still retaining their overall "sound". And that really became the blueprints for what I want out of a band.
For the younger listeners out there, or those who haven't been exposed to old CF yet......go find the song "Rex Irae (Requiem)" by CF, and give it a listen. Then go listen to My Dying Bride, Paradise Lost, etc. You will see that those bands (and ND as well) were directly influenced by what Frost did on songs like that one. Slow tempos, detuned guitars, moaning painful spoken word vocals with operatic female vocals, violins and keyboards.....Celtic Frost are the ones who brought that shit to the underground metal scene, years before MDB, ND, PL, or any of us did.