Two things:
Adding music to YouTube clips really irritates me. I just mute them. Usually if there's music added I assume it's because the video is boring.

Second, I have posted many videos of a community band my wife is in. I put the title of the music in the title and description of my post. YouTube always sends me an email within minutes saying they've "detected copyrighted works within my video" but they also say that unless the copyright holder complains, it's no big deal, and even if they do, they'll just remove the video. I've never had a copyright holder complain. But I've never posted anything owned by Sony either...