Once I learn a song, I pretty much have it, save for a few exceptions (This. Here and Now. With You). Some songs I just don't care enough to learn, others I happen to learn because of how often I hear them (whether I want to or not - here's look at you Why Can't I Be You)... I switched out 4:13 Dream with Wish for the anniversary before I had a chance to learn It's Over... I think I want to conquer that one next.