This Instrument Will Register Body Reactions of Student Piano Player (Nov, 1929)

I can’t imagine how this would help teach the piano. I think Dr. Johnen just got his kicks by strapping women into weird equipment.

This Instrument Will Register Body Reactions of Student Piano Player

A NEW device has been patented by Dr. Kurt Johnen, Berlin piano pedagogue, which records the motions and bodily reactions of a piano player to determine if the selection is being properly interpreted. A lady is pictured being examined by the device. A pneumatic belt records the change of the circumference of the chest, pneumatic cuffs about the upper arms control the changes of muscle tension, through a hose is recorded the rhythms of respiration and another hose transfers the strength of touch. Dr. Johnen expects this device will aid him in instructing his pupils in interpretation.