Polymnia: The Music Visualizer

Let's enjoy music with beautiful visual effects.

Features:
- Contains 5 kinds (and some variations) of visualizers.
- Easy to use like a (previous) built-in music app.
- Supports full screen mode.
- Playing songs in the background.
- Adjusting sound delay for a bluetooth speaker.

Caution:
- Cannot play DRM-protected music or videos.

Acknowledgement:
- Some icons are created by Icons8 (http://icons8.com/).