Best Oscar Performance John Legend and Common Singing Glory!

OMG! The BEST EVER performance on the Oscars was John Legend and Common singing "Glory" from the soundtrack to "Selma". They received 3 standing ovations and many people in the audience were in tears after the performance. I just love that song, I wanted to buy it on Amazon.com but they aren't selling it as a single, you have to buy the entire soundtrack damnit. I'm gonna look on Itunes later, I just want that song. Although Ledesi sings Precious Lord and she sounded amazing on it. They let you hear 30 seconds of each song. those were the only 2 songs on the soundtrack that I liked. hahahaha