Instrumental bodies with a somehow uncanny cyberpunk feel to it, via the Guardian:
"The spines allow natural bending and twisting, and contain a series of three measurement devices at specific points. They are fitted with a combination of accelerometers (those cunning things in your phone that can tell up from down), rate gyroscopes, which sense angular velocity, and magnetometers that pick up on the earth's magnetic field. By mapping these sensors at points along the spinal column, the designers can build a picture of orientation and shape – which is then used to determine the sound that's made."
