1/ the relation between sound pitch, human body, and math ; about length
|sound pitch _organ / violin|
This is also related to Pythagorean tuning.
|unit of length with human body + Maya numerals|
2/ visual or structural similarity with musical instrument + sheet
|organ / organ sheet _ Twinkle Twinkle Little Star|
|bread board / go equipment|
3/ the relation between kinect and theremin