Henry Veld

Giovanni Pierluigi Da Palestrina

Fiorenza Cossotto

The Honeydreamers

Günther Arndt

Der Bendersche Kinderchor

Berliner Symphoniker

Wiener Kammerorchester

Escolania & Capella De Música Montserrat

John Alldis

Ralph Vaughan Williams

Reginald Jacques

Wilfred Brown

Richard P. Condie

Berliner Philharmoniker

Ettore Gracis

Jean Négroni

Boris Ord

Joan Sutherland

The Renaissance Singers

Dietrich Knothe

Eamonn Andrews

The Royal Choral Society

The St. Olaf Choir

Prof. Jakob Stämpfli