Expand and shrink 2

In this one I have included colour the higher the mouse pointer is the lighter the colour of the ellipse ; white...... the lower the mouse pointer the darker the colour; red the colour works on a white to yellow to orange to red gradient....
Next step I want to include noise I am thinking the right click will make the piano scale grow whilst the ellipse grows, the left click will make the piano scale decrease with the decreasing ellipse I think that I will include a key function to reset the noise so it will continue to make the noise......
Im going to use garage band to make the piano noises