 AudioKit.start(withPeriodicFunctions: sequencerFunction)
 sequencerFunction.start()
 
-class PlaygroundView: AKPlaygroundView, AKKeyboardDelegate {
-
-    var keyboard: AKKeyboardView!
+class PlaygroundView: AKPlaygroundView {
     
     override func setup() {
         addTitle("Microtonal Morphing Oscillator")


    // send note on for notes in the present
    let presentNN = nnCalc(performanceCounter)
    let frequency = AKPolyphonicNode.tuningTable.frequency(forNoteNumber:presentNN)
    osc.play(noteNumber: presentNN, velocity: 127, frequency: frequency)

    performanceCounter += 1

        ) { multiplier in
            osc.detuningMultiplier = multiplier
        })
    }

    func noteOn(note: MIDINoteNumber) {
