YouTube claims that this piece is own by SourceAudio Holdings LLC On behalf of: Current Music - Current Music - Ear Parade. Please remove the claim that this is in the public domain or clarify the issue with YouTube. Thanks!
Dispute it, link them back to this page and link the public domain license. YouTube's copyright system is broken. I also just had an issue - my video just got claimed by UMG for the auto copyright system thinking this was "Der Winter - 1. Erstarrendes Schauern im eisigen Schnee - Entsetzlicher Sturm - Laufen und Trampeln mit den Füßen vor Kälte - Winde - Zähneklappern". I had an issue using this piece in another video a few months ago as well, I disputed it and it got resolved but it took a month.
My theory is that since there are so many different renditions of certain classical pieces, the automated copyright system has difficulty correctly identifying them.