Joel Thomas Zimmerman (born January 5, 1981), known professionally as Deadmau5 (stylized as deadmau5; pronounced "dead mouse"), is a Canadian electronic music producer, DJ, and musician. Zimmerman mainly produces progressive house music, though he also produces and DJs other genres of electronic music, including techno under the alias Testpilot. Zimmerman has received six Grammy Award nominations for his work.
He has worked with other DJs and producers, such as Rob Swire, Wolfgang Gartner, Sofia Toufa, and Kaskade. He has also collaborated with Steve Duda under the group name BSOD (Better Sounding On Drugs), and was part of the group named WTF? with Duda, Tommy Lee and DJ Aero. In 2007, he founded his own record label, Mau5trap. Deadmau5 is currently one of the highest paid electronic music producers in the world, and is a masked music artist similar to Marshmello and Daft Punk. His works have been included in compilation albums such as Tiësto's In Search of Sunrise 6: Ibiza, and presented on Armin van Buuren's A State of Trance radio show.