         auContainer.addSubview(au)
         auContainer.contentSize = au.frame.size
         currentAU = au
-
     }
 
     public func loadInstrument(_ name: String) {


    private func initDropDowns() {
        for i in 0 ..< 3 {

            if let button = getEffectsButton(i) {
                effectButtons[i] = button
            }

    }

    public func showAudioUnit(_ audioUnit: AVAudioUnit) {
        if currentAU != nil {
            currentAU?.removeFromSuperview()
        }
