Great work!
The story kept me playing until the end, even though I had to restart a few times.
The music really stood out, that was my favorite part.
The challenge level was nicely tuned, not a breeze, but not impossible.
I kept forgetting which way my scroll wheel sent the tuner, maybe if it wrapped back around finding the right frequency wouldn't be a little "aw crap" moment.
Solid polish, great uniform aesthetic, and creative use of the theme, nice job!