Sub Urban was born Danny Maisonneuve in 1999 and grew up in New Jersey.

After teaching himself music production, he began creating his own beats. The sound that eventually turned into Sub Urban explored EDM bass, rock song structures, and Maisonneuve's detached croon. After appearing on a few tracks in 2017 and 2018 with DNMO, Sub Urban broke through in a bigger way with his 2019 single "Cradles." The song's creepy atmosphere and inventive music box-sampling instrumental were infectious enough to gather millions of streams in a short time, and the dark visuals of its accompanying video went on to be viewed over 100 million times.