Undine, Act II: Recitative and Aria. So wiss, dass in allen Elementen (Undine) - Song by Albert Lortzing, Monika Krause, Josef Protschka, Heinz Kruse, John Janssen, Christine Hampe, Andreas Schmidt, Ingeborg Most, Klaus Hager, Gunter Wewel, Dirk Schortemeier, WDR Rundfunkchor Köln, WDR Rundfunkorchester Köln, Kurt Peter Eichhorn