Some people have a belief that everything should be distributed freely. Others just want to becuase they can.
If the record label doesn't want you to use their music on your video.
maybe because it has really bad stuff in it or the music is copyright
Some people use Itunes or other ways of buying songs for it.
There was once a lot of copyright issues with music videos being put on YouTube and at one point the site stopped people from uploading videos! Many record companies have now struck deals or are still battling. VEVO is owned by Sony Entertainment and is their way of getting music videos by their artists on YouTube legally.
copyright of music belongs to the sound recording company, composer and lyrics writer if the music is quite old (mozart etc) you can publish it, otherwise it is a copyright infringement to publish music on youtube without the owners permission The best way to avoid copyright infringement on YouTube is to post only content that is entirely your original work.
Instrumental music is protected by copyright, but YouTube's automated matching system may not immediately catch an unlicensed use. See YouTube's copyright polices at the link below for more information.
Some music videos are removed due to the copyright owner claiming the video as their property and demanding the YouTube user to take down the video. Most music videos on YouTube are user-uploaded and not all of those videos have permission from the copyright holders to be uploaded and used on YouTube, which results in copyright complaints and videos getting removed.
Adding music to YouTube without the permission of the copyright holder is illegal. YouTube will notify you when you upload to YouTube if you are violating someone's copyright so you can remove the file. The offending file will be deleted as will the YouTube account of someone who repeatedly ignores copyrights. (See links below)
They took it down because of Sony Music copyright claims... =(
That's what the term "copyright" means, that the work in question (musical or otherwise) belongs to someone and cannot be copied without the permission of the owner (who normally wants to be paid).
If a song is on iTunes, chances are that there is somebody who holds the copyright rights to the song. If a song is copyrighted by someone somewhere other than YouTube, then the copyright will still apply when the content becomes available and able to be viewed on YouTube.
You cannot put commercial music created by someone else on YouTube as it breaks the copyright agreements. You agreed not to do this when you signed up for a YouTube account. YouTube uses special software that can identify music that is protected by copyright and will remove the audio from your video. If they have to keep doing this on your account you will be blocked from using YouTube. (See links below)