         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
            }

        // create some menus
        initDropDowns()

        guard let url = Bundle.main.resourceURL?.appendingPathComponent("Organ.wav"),
            FileManager.default.fileExists(atPath: url.path),
            let audioFile = try? AVAudioFile(forReading: url) else {
            AKLog("Didn't find source file")
            return
        }

        let player = AKPlayer(audioFile: audioFile)
        player.isLooping = true
        player.buffering = .always // clean loop
        player >>> mixer

        // setup the initial input/output connections
        auManager?.input = player
        auManager?.output = mixer

        self.player = player

        // assign AudioKit's output to the mixer so it's easy to switch sources
        AKManager.output = mixer
