Grey has been played on NTS shows including Chicago Takeover, with The Middle first played on 7 September 2018.

Brothers Kyle and Michael Trewartha grew up in Fountain Valley, California. Kyle played guitar in a metal band before releasing original songs and remixes in electronic genres such as dubstep and electro house under the name Singularity from 2011 to 2014. He also had two releases under the name Kyle Tree in 2015 and 2016. In 2013, Michael started to learn how to produce music.

They officially formed as Grey in 2015, first releasing a remix of "Where Are Ü Now" by Jack Ü, later remixing songs…