-- mouseY ; frequency at X axis, amplitude at Y axis
let freq = mouseX kr 20 2000 Exponential 0.1
    ampl = mouseY kr 0.01 0.1 Linear 0.1
in sinOsc ar freq 0 * ampl

-- mouseY ; variant with equal arguments but a random traversal
let freq = mouseXRand kr 20 2000 Exponential 0.1
    ampl = mouseYRand kr 0.01 0.1 Linear 0.1
in sinOsc ar freq 0 * ampl