Tokio Hotel is a German pop rock band, founded in 2001 by singer Bill Kaulitz, guitarist Tom Kaulitz, drummer Gustav Schäfer, and bassist Georg Listing. Its sound encompasses multiple genres, including pop rock, alternative rock, and electropop. The quartet has scored four number-one singles and has released three number-one albums in its native country. The band has sold more than 10 million CDs worldwide. After recording an unreleased demo-album under the name "Devilish" and having their contract with Sony BMG Germany terminated, the band released its first German-language album, Schrei, as Tokio Hotel on Universal Music Germany in 2005. Schrei sold more than half-a-million copies worldwide and spawned four top-five singles in both Germany and Austria.