Yes, that sounds like something which goes in the right direction. Now just drop the modern stuff - the synth bass beat doesn't really fit the description - and have some more Gregorian growl and Lucifer's your uncle.
I'm listening to this right now [1] and (for those of you who don't have a chance to hear it right now) it definitely isn't what I would call a "hum"... that's way too gentle and not bass enough to describe this sound. I'd call it more like low-frequency rumbling (though that's probably not a perfect word for it either).
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