How do I Add a UITextView on top of AVPlayerViewController

Question

I have an app that plays audio tracks. Previously, when I used MPMoviePlayerViewController, I was able to put a UITextView on top of the player to display lyrics. Since switching to AVPlayerViewController, the only way I can see that I can add text on top of the view is to use the contentOverlayView - but the text window is static and will not scroll as it did on the MPMoviePlayerViewController.

The only other way have found to achieve this is to add the UITextView as a subview to the window, but then it appears beneath the AVPlayer, and I have been unable to move it to be on top of the player. I have already tried using bringSubviewToFront and that does not work.

This is how I add the TextView:

   textViewAZ = [[UITextView alloc] init];
    
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
    if (orientation == UIInterfaceOrientationPortrait)
    {
        textViewAZ.frame = CGRectMake(40, 140, self.view.frame.size.width-80, self.view.frame.size.height-150);
    }
    else
    {
        textViewAZ.frame = CGRectMake(150, 140, self.view.frame.size.width-80,self.view.frame.size.height-100);
    }
textViewAZ.text = playingLyrics;
textViewAZ.backgroundColor = [UIColor blackColor];
textViewAZ.textColor = [UIColor whiteColor];
textViewAZ.scrollEnabled = YES;
UIWindow *currentWindow = [UIApplication sharedApplication].keyWindow;
[currentWindow addSubview:textViewAZ];
[currentWindow bringSubviewToFront:textViewAZ];

Does anyone know of a way to put a scrollable text view on top of the AVPlayerViewController?