Music in the Air

It sounds like you're describing an interactive and innovative musical instrument that uses a combination of motion sensors and electronic control circuits to generate music. The instrument appears to consist of rows of pipes, each associated with a different musical note. The user can select a specific musical instrument by pressing a switch, and then generate notes by moving their hand in the air over the rows of pipes.

The principle behind the instrument involves blocking invisible rays between pairs of tubes as the hand moves. An electronic control circuit monitors the passage or blocking of these rays and triggers the generation of a digitally created note corresponding to the specific pair of tubes blocked by the hand. This creates a dynamic and interactive musical experience, allowing users to explore different sounds and melodies based on their hand movements.

Such a musical instrument could provide a unique and engaging way for people to express themselves through music, combining the experience of interacting with physical elements (the pipes) with the digital capabilities of generating various musical notes. It could be used for artistic performances, interactive installations, or simply as a fun and creative tool for individuals to experiment with music in a novel way.