Ver 2.6.1, for Android OS 1.5 and up

Drag your finger around the screen to create flowing music with this expressive touch synthesizer.
Check the "more dialpads" option in the menu for external plug-ins. (Developer kit available for making your own dialpads, email me.)
Like what you feel? Consider learning to program. It's some serious magic

Ethereal Dialpad synthesizer android apps youtube video