UPDATE:
Thank you for clarifying.
The tension fits what you described, a gradual increase until about the 4:00 minute mark. I'd say, despite the fact you didn't start with an intention, I think a good representation of the emotion this piece ends up giving.
Nice work. :)
Original 4 star review:
"I get an interesting vibe from this piece. It feels like the kind of thing I'd hear in an abandoned warehouse level in a stealth game.
I'm curious, why call this piece, "Keep Calm"? Is there a story behind that?
It's hard to tell from the description what your intent was when you created this piece, if you had one. If I knew what your intent was, I could give you better feedback, where I'd base my review on how well I thought your ideas came through in the piece rather than on my own taste.
More info about how I review music here: https://codefreq.newgrounds.com/news/post/1089806"