Kevin Olusola

Kevin Oluwole Olusola, also known as K.O., is an American singer-songwriter, beatboxer, and cellist. He gained fame as the beatboxer of the a cappella group Pentatonix, after they won NBC's The Sing-Off in 2011. Olusola is known for his unique talent of 'celloboxing,' where he plays the cello and beatboxes simultaneously. His celloboxing version of Mark Summer's 'Julie-O' went viral in 2011, leading to his involvement with Pentatonix. He has released eleven albums with the group, selling over 2 million records and accumulating over two billion views on their YouTube channel. Olusola has also performed at classical music festivals and opened the TED Conference in Vancouver. He was chosen by Quincy Jones to represent him in concert at the 2012 Montreux Jazz Festival.