Rolf Jacob Sartorius (born October 2, 2002) is a musician from Virginia who first started gaining a following through the app Vine and later Musical.ly by posting videos of him lip syncing to popular songs.

After accumulating millions of followers, he still managed to garner a large amount of hate with his debut single, “Sweatshirt,” in part for his age, lyrics and singing ability. However, “Sweatshirt” and his second release “Hit or Miss” still managed to break the Billboard Top 100.