It’s a classic.
It’s the perfect background music to play in your games.
Most of the tracks have little variants in their pitch and tone, so as not to disrupt the overall feeling of menace the music will bring to your games.
There’s also a 15th Anniversary Diablo soundtrack available, featuring music from the first Diablo game (like the Tristram guitar theme).
If you’re a game master, and you don’t have this soundtrack in your music library. Go get it.