You can tell it's not a fluke if you look at the copyright claims that are sometimes available in the "Show More" section. Frequently, it will show claims that recordings of the same piece by other performers are part of the video.
Two of the movements have correct copyright claims for the performance, but another of the movements has a claim for a recording by a different conductor and orchestra. I see this all the time.
Like another person said here, we don't know how Content ID works or what exactly it's looking for, but it's clearly not an "exact match" of sound waves or something: it has to catch covers of compositions that are still under copyright, for example [1].
Here is one example: https://www.youtube.com/watch?v=RxDCgFFBk20
Two of the movements have correct copyright claims for the performance, but another of the movements has a claim for a recording by a different conductor and orchestra. I see this all the time.
Like another person said here, we don't know how Content ID works or what exactly it's looking for, but it's clearly not an "exact match" of sound waves or something: it has to catch covers of compositions that are still under copyright, for example [1].
[1] https://diymusician.cdbaby.com/youtube/posting-cover-songs-o...