Kevin Olusola 1 credits

Born October 5, 1988 in Pasadena

Kevin Oluwole Olusola, also known as K.O., (born October 5, 1988) is an American singer-songwriter, beatboxer, and cellist. Olusola is best known as the beatboxer of the a cappella group Pentatonix. After the group won NBC's The Sing-Off in 2011, they released eleven albums, which have sold over 2 million copies, and have amassed more than two billion views on their YouTube channel. Olusola has also been identified as developing the art of "celloboxing" (playing cello and beatboxing simultaneously). His celloboxing version of Mark Summer's "Julie-O" went viral in April 2011, which led him to become involved with Pentatonix.

Source: Wikipedia, CC BY-SA 4.0.