Very cool audio ui/ux elements! It was created by Rosina Pissaco(Montevideo, Uruguay)
Feature:
Pixel Perfect
Fully Editable .psd/ easy to edit to your needs
100% Vector Shapes
100% Organized Layers
Layer Easy to Change Color
Font Used: Roboto
overall effort.

You can download this free Audio UI Elements PSD from this page.
Hope you can find it some use!