Mario Paint Composer is a remake of the music system from the original Mario Paint for the Super NES. It is made by unFun Games. The game is completely free.

DrumStepsDrumSteps is a great way to compose music. You don't need to know notation, you just need an imagination and best of all it's FREE.

jam2jam is an application that generates music that you can control while it plays. Even better, you can connect via a network with your friends who have jam2jam to jointly control the music. Jam just like a band, but without the need for complex instrume