             chooseAudio(chooseAudioButton)
             return
         }
+        updateInfo()
         guard node != player else { return }
         guard let player = player else { return }
 

        handleUpdateParam(slider2)
    }

    private func initOscillator() {
        guard node != oscillator else { return }
        booster.disconnectInput()

    var player: AKPlayer?
    var node: AKNode? {
        didSet {
            updateInfo()
        }
    }

