> Look at these images. See the music.
>
> [left.png](https://0xd13a.github.io/ctfs/volgactf2018/colors/left.png) [right.png](https://0xd13a.github.io/ctfs/volgactf2018/colors/right.png)

The description hints at some music embedded in the images. Let's open one in ```StegSolve``` and extract its data as a binary file:


The binary can then be imported into ```Audacity``` as raw data. Data plays as a melody, which confirms that it is a sound stream.

Switching to spectrogram view reveals the flag:


The flag is ```VolgaCTF{SOUND_IS_3D_LIKE_IMAGE}```.