Grand Piano is a MIDI keyboard for feet, not fingers. It is designed to be an interactive and intuitive music-making experience.
The keyboard uses force sensors and foam under each key, allowing for a small amount of travel. Each key lights up when pressed. It can interface with a wide range of software, such as the included web-based visualizer designed to be displayed on a large video wall to provide extra feedback and interaction with users.
Compared to a typical piano, it is at roughly 157:1 scale and only has one complete octave due to size constraints. More octaves could theoretically be daisy chained together via MIDI to create a full keyboard.