Particles To Music

I’ve been experimenting again with the particle code and believe I have something close to what I want, but will probably keep tweaking over the next few months. At the moment it is shooting the particles up according to the amplitude of the music, and works with any mp3 file. This is my first real foray into working with classes, and is very complicated for me. When I learn something new in code it seems to leave me straight away a few hours later.