I finished Diablo 1 today!
But I have to say you're an infidel, disconsidering 1's music is like speaking of Satan in a Christian church. Really, it has the coolest and most frightening,haunting,eerie tracks ever.
Check out Catacombs theme, it's the best, then make sure you listen to Caves !
And about Hellfire, well it's pretty much the same game, but you can run ( more like speed up the character, because it doesen't changes the animation, you just move faster )
You can see items on the ground now, rather than looking for them in that total darkness. Monk, Bard and Barbarrian ar just remakes of the other classes, nothing special.
New Items,new monsters,new quests, but they become unlocked when you beat Diablo, so ... it's pretty much a different game, after you play Diablo.
Imagine, I finished Diablo today, now I must play it again.