so it's not 2000-2005, it's not 2009-2010 (Celebration era) after celebration she had a lot of unreleased songs (MDNA and Rebel Heart) but you said it's not from a studio album... Before Celebration era and after 2005 there's only Hard Candy, but it's a studio album, too
it was not written 2000-2005, so it's somewhere from 2006-2015.... it was not written for an album... Was it written for Celebration??? At least give me a small hint