The first Clear Talk Mastery video was their channel introduction video, uploaded on January 12, 2012, titled "Clear Talk Mastery Video Course Example."[1] The most recently uploaded video on the channel was uploaded December 17, 2013, titled "Accent Reduction - How to say the grammar s sound rule #2 - Tip 81." One of the first appearances of Clear Talk Mastery footage shown in a YouTube Poop was in the January 2015 video, "Drop that accent in two minutes! Guaranteed!(link)," by TheSepticFoundry. The video consisted of Dr. Johnson demonstrating the pronunciation of "S" at the end of a word. The Clear Talk Mastery YTP source gained much more attention between February and March of 2015, when TheSepticFoundry and Poops4TheWorld had a 'YTP Tennis Match.'