This is a Music Festival Stage I have been building. It isn't fully complete yet, but it will most likely be built within the next few days.
The stage consists of a DJ's booth, with booth speakers on stage. The control room will have full control of the fireworks which can be launched 1 at a time or all together.

I still have the 3rd tier of seating to do as well-as the exterior of the arena to do. Some risers will be added at the far-back of the floor seating with some V.I.P seating. The arena will have toilets inside, with a full-size cafeteria inside as well.

I will also have a full map download available when its fully complete, but you can see from the pictures it will be complete.
Any criticism is wanted and will be taken into consideration for the progress of the arena. I also plan on creating a full sized Minecraft music festival grounds with multiple stages, a bit like Ultra Music Festival.