going into a cave or underground at night good

The vibe really gets cooking as this track builds. I can envision many uses for the track but the strings at :43 are a bit distractive. There is no "hook" per se, which is appropriate for background music, but I would suggest varying the motif that repeats without change throughout the second half. Love the build though, and the energy.

Good sense of atmosphere and drama, perfect for a score.

Great instrumental! Very stark intro that opens up into a great combination of sounds that present a scary, unnerving ambiance. Tension builds in this song. Expertly written and produced. Bravo!