Isabelle Rezazadeh (born 28 March 1995), who is known by her stage name Rezz (stylized in all caps), is a Ukrainian–Canadian DJ and record producer from Niagara Falls, Ontario.

Isabelle Rezazadeh was born on 28 March 1995[3][5] in Ukraine to a Ukrainian mother and an Iranian father, before moving to Canada at a young age.

[9][11][12] In 2013, Rezz started producing music on her laptop at her home in Niagara Falls, Ontario, and uploaded it to the music-sharing website SoundCloud.

Later that year, she released music on deadmau5's record label Mau5trap and her track "Serenity" was included on the compilation album We Are Friends, Vol.

[15][16][17] During her early career, the American disc jockey (DJ) Skrillex noticed Rezz via a blog; he followed her and sent her a message via Twitter.

[10] In 2016, Rezz announced her first extended play (EP) The Silence is Deafening, which was released on the music label Mau5trap on 22 January 2016.

[47] In January 2024, Rezz with Subtronics and Holly released collaborative singles titled "Black Ice" and "Dysphoria", respectively.

[50] Rezz is an electronic music producer and DJ; her sound has been described as "midtempo bass" and a modern styling of "new beat".

[1] In 2015, MTV called her the "new queen of the dark techno scene", writing she had been "making electronic and techy beats for two years" at that point.

[53] Spotify's outlet For the Record profiled Rezz, calling her "one of the most highly regarded producers of downtempo soundscapes", and saying she "strikes a firm balance between minimal original tech compositions and the all-heavy bass".

[57] On 15 August 2023, Rezz announced her engagement to fellow musician and frequent collaborator Sydney Fisher, who is known by her stage name fknsyd.