OK -- Don't see the large ladies yet but I have no doubt this has to get my UA.
I find it difficult to believe that mono isn't your comfort zone. This is an excellent mono shot.
PS -- As Nathan said -- "Be strong."
I LOVE this image and don't even know where to start.
First: as a purely abstract image it appeals to me on a visceral level -- it just looks interesting (maybe wall-worthy is a good way to put it).
2nd: Your title is perfect. Having worked for years with sound (in radio, film and multimedia) I am accustomed to seeing graphical representations of sound waves and this image reminds me so much of those "sound-wave" images. In fact, the recent episode of the "Cosmos" series used a visualization that looks a lot like this.
I'm glad you explained what it was we are looking at. Even with the inclusion of the truck wheels, I might not have guessed.