Intriguing, but can't find real performances, just this: https://vimeo.com/276326098

Probably because it sounds terrible. It's more a physics toy than a musical instrument based on the article.

> The Telemetron is a unique mode of musical performance that takes advantage of the poetics of zero gravity, and opens a new field of musical creativity.

The article heavily implies it’s built deliberately for the purpose of music production and even goes so far as to discuss its ability to be recorded. I doubt it sounds good but the whole point is to produce music with it, and the whole point of music is to be listened to.