> Sound.SC3.UGen.Help.viewSC3Help "Lag2"
> Sound.SC3.UGen.DB.ugenSummary "Lag2"

> import Sound.SC3

> let x = mouseX KR 220 440 Exponential 0.1
> in audition (out 0 (sinOsc AR (mce [x, lag2 x 1]) 0 * 0.1))