Download RD3 HD - Groovebox v1.6.0 APK. Create your own grooves and drum loops with RD3 HD - Groovebox! Use your Android phone or tablet as a musical instrument and make your own electronic music tracks! Recreate the sound of early electronic dance music with the RD3 HD – Groovebox that recalls two 303-style analog synthesizers, a drum machine plus reverb, distortion, phaser, filter and delay audio effects! Developed in Berlin, RD3 HD - Groovebox is a pioneering audio app that lets you program your own grooves. This multi-touch enabled app makes it simple to invent unique loops and manipulate them with resonant filters and effects on the go.