One of grime's most sought-after MCs and producers, Teddy Music has just dropped the video for his recently single "What Do You Know". As ever, Teddy's absolutely on form and packs the track with plenty of clever one-liners ("I was the guy with weed in school and stuff because it helped me get high grades") and Wiley continues his unstoppable run with one of his cleverest, most energetic verses to date. The video keeps things relatively simple, but having Wiley spit bars through an old TV was a clever touch from director, Morgan Keyz. While you wait for the single to be released on September 11, check out the video above and keep an eye out for Rude Kid's cameo as the DJ.