u/Evija2021

In the beginning part of Amazonia, there is a notable whistling sound. Out of curiosity, does anybody know what it is, or instrument of sorts it is? The only thing I can even remotely suggest is an Aztec death whistle, which I doubt it is, as I have heard one before on the Soulfly song "Unleash".
Thanks for any replies and help.

This past weekend I just discovered Disembodied Tyrant. Holy shit. The 4 EP's they have released so far, are an absolute mindfuck of blackened symphonic "electronica" deathcore.

I definitely have a new favorite gym workout soundtrack to pump me up.