Georg Friedrich Haas: 11.000 Saiten (excerpt) (2020)

The minimal pitch interval a human ear can distinguish is about 2% of a semitone (the interval between two adjacent keys on a piano). So, one way to get a seamless continuum would be to make a giant piano with 50 times as many keys. In 11,000 Strings, Georg Friedrich Haas offers a simpler solution: get 50 pianos, tune each of them 2% of a semitone higher than the previous one, and arrange them in a big circle around the audience. - via:

[ed. Quite strange.]