TheFatRat

In his youth, Büttner practiced flute at the age of four, piano at the age of 5 and participated in music classes at his school. Büttner began producing music in 2001 under his real name. He began by making background music for television, radio and advertisements and produced music for DJs.[4]

In 2010, Büttner produced the song Mignon Mignon for René la Taupe, which became a number-one single in France.[5] Around that time, he also produced the song "Audubon Ballroom" on Lupe Fiasco's album Food & Liquor II: The Great American Rap Album Pt. 1, which charted at #5 on the Billboard 200.[6]

In July 2011, he began making solo music under the pseudonym TheFatRat, a nickname given to him in his youth. His career began with the release of his first EP, Do Be Do Be Do.[4]

By 2016, Büttner's music was used in over 1.5 million YouTube videos.[7] His single "Unity" was included on the album Sounds of Syndication Vol. 1[8] curated by Tom Cassell, one of the most subscribed streamers on Twitch.

In November 2016, Büttner released his second EP, Jackpot on the Universal Music label.[7] The EP reached #23 on the Billboard Dance/Electronic Albums chart.[2] In December 2016, Büttner started a record label, The Arcadium, in collaboration with Universal Music.[9]

In June 2017, he released the single "Fly Away" featuring vocalist Anjulie. In July, he performed at the Electric Forest Festival.[10] In October 2017, he released the single "Oblivion" featuring vocalist Lola Blanc.[11]

In March 2018, he released the single "MAYDAY".[12] In July 2018, he released "Warrior Songs", a music pack for the video game Dota 2, which has been made available in the game as of September 13, 2018, according to Matthew "Cyborgmatt" Bailey, director of operations of Team Secret.[13]

In December 2018, he posted a video about how YouTube's content ID system is "broken", as one anonymous user known as Ramjets claimed all the earnings for his song "The Calling" and YouTube refused to settle the dispute.[14][15][16] The claim was removed by YouTube later.[17]

In February 2020, Redbull.com made 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."[18]

On February 7, 2020, Büttner released a sci-fi music video on YouTube starring himself and Maisy Kay for Büttner's song, "The Storm," which he performed with Kay.[19] The music video was filmed in Iceland, with Surtshellir Cave on the first day, Hekla Mountain on the second day, and Hjörleifshöfði on the third and final day. Accompanying the music video is a game for mobile called The Storm - Interactive, where one can play through the story of the video.[20]