To celebrate their fifth birthday, Red Bull Studios London gave the opportunity to aspiring MCs to spit their best bars for a chance to work on a track with Zdotone of grime's finest producers. 46 budding spitters from across the UK took part in the challenge, dropping by the recording studios on Tooley Street, and in the end only five of them made the cut. EyezUncle Mez, Dubzy, Snowy and Row D were all chosen by Zdot to feature on "Raise The Bar", which you can listen to in full below. Keep your ears to the ground for these five exceptional bar-slingers.