We don't claim to be speaking a genuine, unknown language. When you begin chanting, it may seem awkward at first. You'll probably get in a pattern of inhibiting the sound's movement in particular directions, of shifting directions by will. It will not seem organic or unified. This something that you just have to work with.
Music can change a cell into a garden, a prison into a continent to wander.
Try think of space as not physical place and placement, but a multidimensional modality. This will help the chanting process. Your rattling and chanting is gently alternating the psycho-physical space you are in. Fasting intensifies the sensitivity of the senses and concentration, for example. Put as much into your chanting as you can.