In this application, you can draw and paint predefined beat samples on the screen using a color palette. Each individual color in the palette corresponds to a unique beat sample. So you can play melodies by touching on the drawn colors.
There are many beat samples, so you can draw a lot of combinations. The application allows playing polyphonic samples, you can play many samples at the same time.
You can change the thickness of the painting brush, so you can draw fine features and write on the screen by free hand as well.
After you finish the painting all you have to do is to touch play button to prepare the set for playing.