Claudia Brücken (born 7 December 1963, Berching, Bavaria) is a German singer who fronted the synthpop groups Propaganda and Act. In 1996 she started working with OMD co-founder Paul Humphreys, first without a name, and since 2004 as Onetwo. Together they also founded the independent record label There(There). In 2013, Claudia and Paul ceased working and living together, and she has subsequently returned to pursuing her solo career.