In Extremo are a popular German folk-metal band known for their medieval themes, instruments, and lyrics. Their music incorporates a standard heavy metal lineup of vocals, guitar, bass, and drums, in addition to medieval folk instruments. Their songs are both originals and traditionals, the latter often in medieval languages. The bandmembers dress in medieval fashion and present themselves under alias names. Founded in 1995 in Berlin, the group made their recording debut in 1997 with the five-track single Der Galgen, followed by their full-length album debut, Gold. In Extremo also scored a series of modestly successful hit singles, most notably the Top 40 hits "Küss Mich" (2003) and "Nur Ihr Allein" (2005).