Right now you can switch between XBox360 Controller (Console Style), Mouse (Aquaria Style) and Mouse+Keyboard (FPS Style) on the fly. (i.e. if you start using the gamepad it'll switch to gamepad mode, etc ... and eventually we'll add support for other gamepads)
The control schemes each work slightly differently, and you can customize how the game plays by toggling certain features. (in the final release you'll be able to configure the gamepad+keyboard buttons as well)
The default for mouse is Left mouse button is move, Right mouse button is interact/sing. Middle mouse is look around, if you have it. Naija has a bunch of moves you can do by moving her in different ways as well.
Here's a screen with Naija singing...
She's attracting the attention of the small jelly fish, and her voice is echoed in the "phonograph" plants. The "song interface" leaves a little trail behind your cursor, so you can doodle a bit too. Its pretty fun to improvise along with the background music.
