Joel Thomas Zimmerman (born January 5, 1981), known professionally as deadmau5 (pronounced "dead mouse"), is a Canadian record producer, DJ, musician, and composer. Zimmerman produces a variety of styles within the progressive house genre and sometimes other forms of electronic music. His tracks have been included in numerous compilation albums, such as the 2007 In Search of Sunrise 6: Ibiza CD. The February 2008 issue of Mixmag's music magazine included a free CD titled Tech-Trance-Electro-Madness, mixed by Zimmerman. Tracks have also been included and presented on Armin van Buuren's A State of Trance radio show. His debut studio album, Get Scraped, was released in 2005, followed by others in the next few years.
Zimmerman has received six Grammy Award nominations for his work. He has worked with other DJs and producers, such as Kaskade, MC Flipside, Rob Swire and Wolfgang Gartner. On a number of releases, he has partnered with Melleefresh. An early 12" single produced on vinyl titled "I Don't Want No Other" was released by Joel Zimmerman and Derek Caesar under the group name Dred and Karma. A 2006 album titled deadmau5 Circa 1998–2002 was released under the alias Halcyon441. He has also collaborated with Steve Duda under the group names BSOD, and WTF? including Duda, Tommy Lee, and DJ Aero. 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.