Jennifer Rostock is a rock band from Berlin, Germany. Jennifer Weist and Johannes "Joe" Walter-Müller are both natives of the German Baltic island Usedom and first met in kindergarten. Walter-Müller started taking music lessons as a five-year-old; he initially began to learn the violin, later he started to play piano. At the age of 13, he met Weist again when she sang at a karaoke show and he invited her to join his school band. They experimented with different genres such as rock, pop, and swing, in the beginning singing in English, later in German and eventually writing their own songs.