About Jacob Sartorius
Rolf Jacob Sartorius is an American social media personality and singer. He rose to fame via social media after posting lip-syncing videos on short-form video application Musical.ly. In 2016, he began releasing music with his debut single "Sweatshirt", which, along with his second single "Hit or Miss", charted on the Hot 100 in the United States and in Canada. At age seven, he began acting in musicals, where he discovered his love for performing. His lip-syncing videos on Vine acquired more than 8 million followers as of August 2016 before Vine shut down in 2017.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.