Rolf Jacob Sartorius (born October 2, 2002), known professionally as Jacob Sartorius (/dʒeɪkəb sɑːrtɔəriːəs/), 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. Jacob Sartorius was the 9th most searched musical artist of 2016. 　　On January 20, 2017, Sartorius released his debut extended play The Last Text with 8 songs. His debut concert tour The Last Text World Tour took place the same year.