Synth Audio App UI Kit - CM 5287 | 5 MB
This UI kit (.PSD file) includes all the essential elements you will need when designing a synth or other type of audio app. They are suitable for both touch screen displays such as the iPhone/iPad and also traditional desktop usage (such as plug-in instruments). The source file includes a standard size version and a @2x retina ready version of the set.
DEMO:
https://creativemarket.com/Medialoot/5287-Synth-Audio-App-UI-Kit