The lyrics of their songs are often humorous, tongue-in-cheek critiques of German government or society.

The group's most popular singles have been "Alles nur geklaut", "Gabi und Klaus", "Millionär", "Küssen verboten", "(Du musst ein) Schwein sein", "Mein Fahrrad", "Olli Kahn" (about German World Cup goalkeeper Oliver Kahn) and "Deutschland".

The frog logo has appeared in a number of album and single covers.

Their hit song "Millionär" appeared in the accompanying video to the German textbooks "Komm mit", "Stationen", and "Kontakte".

It was written by German songwriter Steve van Velvet.