Chamber, Duos, Dussek, J L (composer)

Edward Witsenburg (harp), Jacques Ogg (fortepiano), Teunis van der Zwart (horn), Erwin Wieringa (horn)

Janine Johnson, John Khouri (fortepianos)

Catherine Michel (harp), Philippe Pierlot (flute), Monique Bouvet (piano)

Derek Bell (grecian harp), Joanna Leach (square piano)

Gabriella Dall'Olio (harp)

Burkhard Glaetzner, Manfred Friedrich, Christine Schornsheim (early keyboard instruments), Andreas Staier (early keyboard instruments), Reinhold Friedrich, Michael Endres (piano), Tabea Zimmermann (viola), Hartmut Höll, Harriet Krijgh (cello), Claire Huangci (piano), Jochen Kowalski, Michael-Christfried Winkler, Mitsuko Shirai (mezzo-soprano), Christine Schäfer (soprano), Juliane Banse (soprano), Wolfram Rieger, Hermann Prey (baritone), Bo Skovhus (baritone), Robert Worle, Anne Schwanewilms (soprano), René Pape (bass), Dariusz Niemirowicz, Luciana Mancini, Concerto Köln, Leipzig Bach Collegium, Carl Philipp Emanuel Bach Chamber Orchestra, Academy of St Martin in the Fields, Camerata Academica des Mozarteums Salzburg, Berliner Barock-Compagney, Neues Berliner Kammerorchester, Linos Ensemble, Dresdner Philharmoniker, Berlin Radio Symphony Orchestra, Staatsphilharmonie Rheinland-Pfalz, Sofia National Opera Orchestra, Orf Vienna Radio Symphony Orchestra, Gürzenich-Orchester Köln, Petersen Quartett, Rheinische Kantorei, Das Kleine Konzert, Rostocker Motettenchor, Leipzig Capella Fidicinia, Wiener Sängerknaben, Wiener Volksopernorchester, Dresdner Kreuzchor, Hugo Distler Chor, Wiener Akademie, NDR Choir, NDR Sinfonieorchester, Deutsches Symphonie-Orchester Berlin, Kölner Rundfunkchor, Kölner Rundfunk-Sinfonieorchester, SWR Rundfunkorchester Kaiserslautern, RIAS Kammerchor, Beethoven Orchester Bonn, Max Pommer, Hartmut Haenchen, Sir Neville Marriner, Sandor Végh, Michael Erxleben, Herbert Kegel, Gerd Albrecht, Gustavo Gimeno, Boris Spassov, Cornelius Meister, Vladimir Spivakov, James Conlon, Frank Strobel, Hermann Max, Hartwig Eschenburg, Peter Marschik, Martin Flämig, Martin Haselböck, David Shallon, Antony Beaumont, Christoph Eschenbach, Helmuth Froschauer, Klaus Arp, Christoph Perick, Jan Latham-König, Christopher Sprenger

The Fibonacci Sequence

David & Igor Oistrakh (violins), Hans Pischner (harpsichord), Shura Cherkassky (piano), Rita Streich (soprano), Andrés Segovia (guitar), Koeckert Quartet, Irmgard Seefried (soprano), Erik Werba (piano), Helmut Krebs (tenor), Adolf Hartmann (mandolin), Margot Guilleaume (soprano), Fritz Wunderlich (tenor), Hans Günter Nöcker (bass), Fritz Neumeyer (fortepiano), Végh Quartet, Nicanor Zabaleta (harp), Léopold Simoneau (tenor), Helmut Zacharias (violin/direction), Andor Foldes (piano), Kim Borg (bass) Berliner Philharmoniker, Radio-Symphonie-Orchester Berlin, RIAS Symphonie-Orchester Berlin, Don Cossacks Choir, Fritz Lehman, Kurt Gaebel, Eugen Jochum, Ferenc Fricsay, Paul Strauss, Serge Jaroff

Toni Grunschlag (piano), Rosi Grunschlag (piano), Gunther Weiss (cello), Richard Harand (cello), Walter Tombock (horn) Vienna Volksoper Orchestra, Paul Angerer

Simon Callaghan (piano), Clíodna Shanahan (piano)

Elinor Bennett (harp)

Masumi Nagasawa (Naderman single action harp 1815), Richard Egarr (John Broadwood & Son grand piano 1804)

Masumi Nagasawa (single action harp) & Richard Egarr (piano forte)