Modifying the UI

class PlaylistMasterViewController: UIViewController {

    @IBOutlet weak var aButton: UIButton!  

    override func viewDidLoad() {
        super.viewDidLoad()

        aButton.setTitle("Press me", forState: .Normal)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "showPlaylistDetail" {
            let playlistDetailController = segue.destinationViewController as! PlaylistDetailViewController
            playlistDetailController.segueLabelText = "Is it gonna work?"            
        }
    }
}