Keenan Cahill was an American YouTuber and Internet celebrity who gained fame in the early 2010s for his viral videos in which he lip synced to popular songs. He went on to become a singer-songwriter and also did video collaborations with various other well known celebrities.
Cahill launched his first lipsynced YouTube video on August 28, 2010, on the Katy Perry song "Teenage Dream". Guest artists on his channel included Jennifer Aniston, 50 Cent, Flo Rida, Katy Perry, Tinie Tempah, Maroon 5, Cody Simpson, Jason Derulo, Big Time Rush, Glee, The Wanted, LMFAO, Drake Bell, Justin Bieber, Gym Class Heroes, Xuso Jones, WWE wrestler The Miz, and Pauly D. He released two EPs and over a dozen singles on iTunes.
From Wikipedia (https://en.wikipedia.org/wiki/Keenan_Cahill) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/legalcode)