Yes, he can. From The Guardian:The candidate said he thought rap music was also helping to break down barriers within the music world. Indeed it was reported last month that Obama will make a cameo performance on the rap singer Q-Tip's next album.There are things in this world that are true. There are things in this world that are not true. And there are things in this world that appear to be true, but would be so awesome that were they allowed to manifest, reality would collapse in on itself. This is in that third category.
