Clavier is a keyboard synthesizer with 128 instruments.
128 General MIDI instruments
Scrollable and resizable multi-touch music keyboard
The app uses the instrument samples already built in to your Android device. Some instruments sound better than others, and several instruments do not implement the full music keyboard range-- a limitation of Android and/or your particular hardware. But with so many instruments to choose from, you will have plenty of choices to stimulate your creative abilities.
More features are coming soon. We welcome suggestions.