Earlier quoted context omitted.
I've had the same experience (although I don't remember if it was specifically the melody being claimed). I don't always bother to dispute them (in my understanding, most of them just claim ad revenue, and we don't run ads), but sometimes it annoys me enough that I do. (The organist and people singing are pretty clearly pictured, and I get especially annoyed when it's a capella.)
> we don't run ads Historically Google only put ads when requested by the channel, which required a fairly significant threshold of views and subscribers and supposedly manual review by Google. Some time last year they started a switch towards serving ads on all videos, regardless of the preferences of the channel (whether you’re big or small, whether you want ads or not), which I hear has been progressing steadily f…
Of course, that I don't ever look at it without an ad blocker makes it somewhat more difficult.