In 2003, the group recorded "Undercover", an album of cover versions of East German rock songs, at the suggestion of their manager Rolf Henning. It was the first time the Puhdys had attempted to cover an "Ostrock" tune since their version of Lift's "Wasser und Wein" (Water and Wine) on "Schattenreiter" 22 years previously. Although the album garnered stronger than usual media coverage in western Germany, some fans were critical of what they saw as unadventurous song choices; most of the tracks (such as Karat's "Über sieben Brücken" and Silly's "Battaillon d'Amour") were each artist's biggest hit.