A just-surfaced outtake from 2003's American Life, "Set the Right" drops a simple, catchy tune over a blend of folky guitar and austere electronics. Less successful are Madonna's odd delivery (proper British vowels, casual Midwestern r's) and disingenuous claim that she won't take political sides.

Photos: Celebrating Madonna: The Queen of Pop's 50 Most Iconic Moments

“My President”

Young Jeezy teams up with Nas on this track, in which he compare his own success with the idea of an African-American winning the Democratic Party's nomination in the 2008 presidential election. "When I pulled up in my car, that s--- was unbelievable to people in my neighborhood because they were like, 'We grew up with him. How the hell did he accomplish this?'" he told Rolling Stone. "I feel like it was the same way with Obama. I grew up all this time, but I've never seen a black man this close to running this country."