Orphe is a throwback to childhood with light up shoes. The difference is they are programmable and connect to a smartphone. Gestures and movements can trigger the lights as well as change the colour.

Furthermore, the shoes can be used as an instrument. On top of that they have an opensource SDK so you can program them to do whatever you want or just use their smartphone app. 

“Beautiful gradation and catchable animation. Orphe has a LED sole inside which realize completely new expression, but that’s not all. Built-in motion sensor will detect your legs movement in real time, and your walk will get analyzed in high accurate data. By connecting to smartphone and computer, Orphe may turn into a musical instrument and controller. If you are a developer, you can develop an application compatible with Orphe by using the free SDK. You may use this as a dance, music, health care, VR/AR and more.“ 

This is another accidental device discovery for experimental music.