Five best Prince songs done by other artists

Prince is one unique dude. Therefore, you might be surprised to learn that other artists have done his songs -- sometimes better. For instance, the world might not have ever been introduced to Sinead O'Connor without her big ballad on a Prince song. Prince recently played a long string of dates in Los Angeles, so it seems like as good a time as any to reconsider some of the cover versions of his songs that are out there.