Please don't post cover versions of other people's songs. As the help site says here:

"You must not copy someone else's music or lyrics without their express permission. If you copy or closely imitate someone else's work, you are likely to infringe their copyright, particularly if it's a composition which has been released commercially. If this results in FAWM being served with a copyright takedown notice, we will remove your song from the site. Obviously we'd rather not have to do this, so our advice is simply: please don't. "