Erica Dunham, better known by her stage name Unter Null, founded the solo aggrotech music project in 1998 at the age of seventeen, while living in Seattle, USA. As of 2012, she is based in Portland, Oregon. Dunham is trained in Classical Piano, Cello and Guitar;.
Unter Null (German for 'below zero') initially began as a powernoise project influenced by a number of similar prominent artists, including Noisex, Converter and P.A.L. Her first, self-titled, album was released in 2001. In 2002, she was signed to Leech and NTT/Annihilvs Records to release her second, web-exclusive album Neocide. In 2005, she signed to label Alfa Matrix. She has since released a number of EPs and albums, remixed several artists, and appeared on compilation albums.
In early 2008, Dunham launched her side project Stray with the release of the self-titled a 2CD album in cooperation with a number other bands including Mothboy, Detritus and Testube. In addition to regular live performances, Unter Null embarked on a short U.S. and European tour in 2005, then a longer European tour in 2006.
In the spring of 2012, Erica relocated to Hamburg, Germany, where at the time of writing, Erica is currently on production of the next Unter Null album.
House fire 
On December 25, 2008, Dunham's studio, containing her musical, recording and electronic equipment as well as other belongings, was destroyed in a fire. It was feared at first that her newest album, Moving On, had been lost in the fire, although tracks were found to be recoverable from the damaged hard drive.