According to Pitchfork, there is currently no Guinness World Record for the feat, but in order to qualify Murs has to keep recording for the whole 24 hours. At the time of publication, Murs is on hour three of 24, but if you tune in to the livestream below he doesn't seem to be too phased just yet. He's also working off of a tracklist of hip-hop classics and deep cuts, so the result won't be one unbroken day-long freestyle so much as a physical act of endurance. Still, there are a lot more hours to go before he crosses the finish line.