A self-described “dorky dad,” Peter Hollens is an American singer, songwriter, and producer best known for his a cappella cover songs on YouTube. His online videos have reached more than 400 million viewers since he started posting in 2011, and his eponymous YouTube channel has surpassed 1.5 million subscribers. “I believe that the future of music is one in which … Continue reading Peter Hollens, A Cappella Extraordinaire