[7] In July 2011, he began making solo music under the pseudonym TheFatRat, a nickname given to him in his youth.
In November 2016, Büttner released his second EP, Jackpot on the Universal Music label.
[2] In December 2016, Büttner started a record label, The Arcadium, in collaboration with Universal Music.
[11] In October 2017, he released the single "Oblivion" featuring vocalist Lola Blanc.
[19] In February 2020, Redbull.com made a 10-minute documentary about Büttner and his career titled, TheFatRat: Everything You Ever Wanted To Know About Him.
They released this within their article, "TheFatRat: Meet the EDM DJ who's elevated video game music to high art.