Corey Taylor is preparing to record a new album with Slipknot, the first since bassist Paul Grey's death in 2010, and you would think that would keep Mr. Taylor pretty busy. Well guess again. Taylor took some time out of his schedule to record a live acoustic version of The Clash's classic song "London Calling" as part of a new online documentary about the legendary punk band. The song will be available as a free download for a limited time so hurry up and grab it plus you can watch the documentary and check out the performances from other artist on Google Play's Youtube.