[GAMEPLAY] DJ Sona's abilities are messing with audio tracks

When you're playing as Sona and have the DJ Sona skin selected, her abilities are making the other audio tracks (such as ambience, announcer, actual game music) drop in volume which I think is a gameplay bug.

You can emulate this again by following these steps:

1. Go into Summoners Rift or Howling Abyss maps
2. Select sona as your champion and make sure you have selected the DJ Sona skin.
3. Once the game has loaded up, level up an ability Q, W, E, (and/or even R).
4. Use the ability and you should be able to hear the audio problem.

To assist with this, I opened up the Practice Tool and leveled myself up and had auto Mana Regen active. I've included a video below that shows what my audio was at (all at 75% was not included as i already had changed the music volume slider to 100%) but with all the other sliders lowered, you can notice the sound difference a lot easier.

Here is the video that I recorded of the sound issues.