Psapp is an experimental electronica band. The band, a duo consisting of Carim Clasmann and Galia Durant, are sometimes credited with inventing a musical style known as toytronica, a form of electronica made with toys and toy instruments. They have released four albums, a Japan Exclusive Mini-Album Northdown and five EPs. They composed the song "Cosy in the Rocket", the main theme on the medical-drama TV series Grey's Anatomy. Some of their other songs have been used in other American TV shows such as The OC and Nip/Tuck as well as the UK Channel 4 TV show Sugar Rush.