From my own experience of uploading videos to Youtube that have music playing in them the music rights holders are already grabbing every opportunity to milk revenue out of the stuff people upload to Youtube.
Even the slightest hint of a song playing in the background even if it just a 30 - 60 seconds long video so not the entire song and the copyright holder will moneytise your video and run ads on it or you have to mute the song or replace it with another, which you then loose any other audio such as people in the video talking.