Sketch Synth 3D is now free and will no longer be updated or maintained.
Sketch Synth 3D gives you a completely new and immersive interface to draw sounds in 3D. The 3D visualization gets you feeling like you are actually there in the sound whilst you sculpt your songs.
Sketch Synth 3D has its own sound engine that you can load your own samples into and apply effects to in 3D; but you can also use it as a MIDI instrument to control your existing synthesizers, there is also OSC input and output so you can do complete remote control and extend with new controllers.