if you're familiar with early genesis, you know how much of a big influence they were on early tool, in terms of song structure. one can't help but wonder if this early gabriel tune may have been a direct influence, if my interpretation has any value. the ending section at 7:00 or so is very, very tool - and something genesis did over and over again for years.
this appropriation of english medieval language was kind of a common theme in genesis.
while a little different, this is basically a tool song with keyboards:
so is this, although you need to get through the early tapping workout first (which van halen has credited as being influential on him):
this is also basically a tool song, with keyboards, or at least starts off as one, although nobody plays guitar like this guy. nobody.
so, people cite crimson, but i think that's more of a drumming thing. really. crimson never did anything quite like tool, but you could often mistake genesis for tool.
anyways, the point i'm making is that there's some context, here, it's not random.