Yeah Alice in Chains music is all about depressing/dark topics.
You might wanna check out some of Iron Maiden. Their lyrics are almost always about a book/film/history. A lot of their stuff is about war and what not but they do it in a way that doesn't feel depressing. I know exactly what you're saying about Alice in Chains. It's that slow emphasis on the lyrics when he sings and sludgy guitar riffs that definitely sets the dark mood.







