Okay, so I'm a HUGE fan of Hans Zimmer, and I have a question about 'The Kraken' Soundtrack. ( 
 
 )And initially I here what I think is D0, very low organ kinda stuff. 
But to me it sounds like a bowed instrument playing this, almost sounds like horn too, so I'm sitting here confused. 
Is this an organ, effects, or am I just hallucinating? Because as far as I know there isn't a bowed or horn instrument that goes this low. 
Although it would be cool, I haven't intensely searched what sort of instruments are out there, but it doesn't look there is any. 
Very catchy rhythm, I love that low bass sound. 
   Thanks for replies.