The expressive voice of Pauline has its roots in Jazz Music. She decided to continue towards jazz, blues and soul. Shortly afterwards she founded her own jazz-projects with well-known musicians. She has sung numerous concerts as well as solo artist as in different chamber music groups . In the following years, the energy of inspiration led Pauline Ruhe into other colours of music and she joined numerous band projects, in which she  experienced more experimental forms of electronic pop music. 

Her voice is characterized by a clear crystalline sound which also has the fullness and volume of a deep soul voice. The singer was often praised for her unadulterated and emotional expression and for her extraordinarily broad vocal range.