Rolf Jacob Sartorius (born October 2, 2002), better known as Jacob Sartorius, is an American singer and internet personality, who rose to fame via social media from posting lip-syncing videos on Musical.ly.
He has earned over 4.3 million followers on Instagram and more than 6 million fans on musical.ly. He also has over 800,000 followers on Vine. On May 3, 2016, he released his debut single "Sweatshirt."
