hsc3-0.16: Help/UGen/drand.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "Drand"
> Sound.SC3.UGen.DB.ugenSummary "Drand"
> import Sound.SC3 {- hsc3 -}
>
> g_01 =
> let n = drand 'α' dinf (mce [1, 3, 2, 7, 8])
> x = mouseX KR 1 400 Exponential 0.1
> t = impulse KR x 0
> f = demand t 0 n * 30 + 340
> in sinOsc AR f 0 * 0.1