- Nancy Gustafson, Grant Dickson, Anthony Michaels-Moore, Richard Lloyd Morgan, Simon Wilding, Alasdair Elliott, Paul Crook, Sir Thomas Allen, Orchestra of the Royal Opera House, Sir John Tomlinson, Royal Opera Chorus, John Dobson, Gwynne Howell, Bernard Haitink, Robin Leggate, Michael Druiett, Catherine Wyn-Rogers, Geoffrey Moses, Gösta Winbergh, Herbert Lippert
- Europe Choir Academy, Aurelius Sängerknaben Calw, Rundfunkchor Berlin, Laura Aikin, Eugenie Grunewald, Margaret Jane Wray, Dagmar Peckova, Hanno Müller-Brachmann, South West German Radio Symphony Orchestra, Baden-Baden, Guy Renard, Peter Lika, Michael Gielen, John Bröcheler, Alessandra Marc, Anthony Michaels-Moore, Thomas Harper tenor, James Johnson, Christiane Boesiger, Glenn Winslade
