Cricket Sound 1987 Brougham

There is an intermittent cricket sound inside my car while I am driving. It is coming from the back seat, near the rear windshield. Any body experienced this?

Possible the metal that surroudns the window is rubbing slight on the window its self causing this. Or the plastic clips that hold the metal on are rubbing on the metal. Ive presonally never had that noise but it makes noise right now because I dont have it put on correctly.

Thanks, I will check on that next time the sound comes on.