hsc3-0.18: Help/UGen/mouseButton.help.lhs
> import Sound.SC3 {- hsc3 -}
As amplitude envelope
> g_01 = sinOsc AR 800 0 * mouseButton KR 0 0.1 0.1
There is a variant that randomly presses the button.
> g_02 = sinOsc AR 800 0 * mouseButton' KR 0 0.1 0.1