Helikopter-Streichquartett (Helicopter Quartet) - Karlheinz Stockhausen
Why the open web links it
A groundbreaking musical performance where four musicians play in separate helicopters, synchronized to a precise score.
Linked by 13 independent sites, 3 of them widely read in the 2026-10 crawl of the open web, including hatena.ne.jp, uoc.edu, classical-music.com, htmlgiant.com, jasonhaaheim.com.