La Roux is a British electropop synth duo band made up of singer and synth player Eleanor (Elly for short) Jackson, and co-writer and co-producer Ben Langmaid. Jackson describes their respective roles as "very much a half and half sharing situation... not like a singer producer outfit", but also recognizing that it often can "look like a solo act". Their music is influenced by 1980s synthpop including Yazoo, The Human League, Heaven 17 and Blancmange.
Source: http://www.sing365.com/music/lyric.nsf/La-Roux-Biography/9C10950D1D1CE86F4825761E001ABEA6