So he tries to be creative to get some subscribers . And his last video was a real success, with this A cappella tribute to John Williams, which hits almost 3 million views in a month. In fact, I was quite disappointed to learn that he is not singing (The song is singed by an A cappella band called Moosebutter.- On their website, you can find the MP3 version of the song). Corey is only doing some lip-synching. Still, it’s a fun video and they all did a good job.