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. In 2016, he released his debut single "Sweatshirt", which reached the Hot 100 charts in the United States and Canada. Later that year, Google announced Jacob Sartorius was the 9th most searched musical artist of 2016.

On December 1, 2016, Sartorius announced his debut extended play The Last Text with 8 songs, and his debut concert tour The Last Text World Tour.