I suppose you want to monetize your videos.In this case, turn the music off otherwise I think it's fine if you just leave it on.
This is from YT team :
Tips for new videos
If you're creating videos with content from other people, remember that rights ownership can be complicated and different owners have different policies. Be aware of music. Many games allow you to turn off background music, while leaving sound effects enabled. And if you're looking for music you can freely use (and monetize!), check out our Audio Library.