Samuel "Sam" Tsui (born May 2, 1989) is an American musician and internet celebrity who rose to fame on YouTube. He is best known for covering songs by popular artists like Adele, Britney Spears, Taylor Swift, Justin Timberlake and Bruno Mars, as well as for his original songs, medleys, and mashups, along with his frequent collaborations with Kurt Hugo Schneider. As of September 2014, he had 1.5 million subscribers.