Copyright claim on My Own Rework of Public Domain Music

heartbaroque

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Jul 21, 2022
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So, I decided created a YouTube channel that uploaded my own reworks of classical music, but on my first video, I uploaded a song by Beethoven called String Quartet No. 1, written between 1798-1800, I got a copyright claim from suisa_sesac_cs, for the melody in the first section, called Allegro Con Brio. This must be in error, right? I recorded the song myself, and the song is in the Public Domain.
I would like to dispute it, but I want to know if there's anything I should be weary of before hand, or any tips to make sure it doesn't get my account deleted.