Too overwhelming. He wouldn't be able to discern anything.You could've put some Emperor in there for your Dad as well, all the Anthems songs don't have anti-religious or Satanic song titles.
Good recommendation, but not metal.If you have any, he might find some of the ambient Burzum stuff enjoyable
That's why I chose "Dunkelheit".Burzum's vocals (on the first three albums) are bound to scare someone with an untrained ear for those type of vocals.
How about some power metal for your dad?
I don't like power metal, so making my father think I like power metal would be lying to him. I'm giving them all stuff I like, not what they might like (unless I like it too).
I appreciate all the help with this list. I may consider switching the Sabbath song to something more upbeat and classic rock-ish.