Peter Hollens is an American entrepreneur, pop singer and producer best known for his work on YouTube as an a cappella cover artist.

With over 1.7 Million subscribers, his videos have reached more than 275 million viewers since 2011. Hollens has collaborated with some amazing artists, including Brian Wilson, Jason Mraz, Hunter Hayes, Lindsey Stirling, George Watsky & The Piano Guys.

He has released over 100+ digital singles and has been involved with a cappella music since 1999 when he co-founded the University of Oregon’s male a cappella group On The Rocks.

In 2010, he was featured on NBC’s The Sing Off!