How do I clear the queue of a MPMusicPlayerController?

Question

I'm trying to replicate the clear queue functionality of the iPod application, however I can't create an empty MPMediaItemCollection with which to call setQueueWithItemCollection:

e.g.

[self.musicPlayer setQueueWithItemCollection:[MPMediaItemCollection collectionWithItems:[NSArray array]]];

where musicPlayer is a MPMusicPlayerController.

throws an exception:

*** Terminating app due to uncaught exception 'MPMediaItemCollectionInitException', reason: 'items array must not be empty'

Is there a way to clear a MPMusicPLayerController queue that avoids this problem?

Any help is greatly appreciated, CV