Meet the Shaggs (1999)
newyorker.com
newyorker.com
Edit: Jon Ronson on The Shaggs: https://www.youtube.com/watch?v=HhtDf82a3pM
[0] http://m.learning.hccs.edu/faculty/scotty.moore/anth2351/ant...
As you might imagine, performing something out of rhythm and out of tune requires extremely good musicianship and ultra-tight focus by the performers. And Alarm Will Sound can pull it off. Here's a recording: https://www.youtube.com/watch?v=E_NJNR3hvTk
Too bad Taco has long since departed the Internet; his music videos were a superb curation of such eclectic music. I similarly discovered Isotope 217 through Taco's samples of "Harm-O-Lodge" and "⏪".