I have a lot of favorites but, I have never heard of Everyday. I don't if it is a Britney song or not! I know about Everybody. Some songs on the internet say they are Britney songs but, aren't her. Anyway, some of my favorite Britney unreleased songs are State Of Grace,Quicksand,Don't Hang Up,Amnesia,Rock Boy,She'll Never Be Me,Outta This World,Before The Goodbye,I Run Away and some others too but, the list could go on lol! These are probably my favorite unreleased songs at the moment!