Rafael Nadal | San Rafael, California | Rafael Hernández Colón | Rafael Viñoly | San Rafael | Rafael Trujillo | Rafael Moneo | Rafael Osuna | Rafael Benítez | Jorge Rafael Videla | Rafael Sabatini | Rafael Correa | Rafael Cordero Santiago | Rafael Alberti | San Rafael, Mendoza | San Rafael, Bulacan | Rafael Squirru | Rafael Lozano-Hemmer | Rafael Escalona | Rafael | Rafael Sperafico | Rafael Solano | Rafael Ruelas | Rafael Rosell | Rafael Morales | Rafael Merry del Val | Rafael Lima (boxer) | Rafael Lima | Rafael Ithier | Rafael Guastavino |
Reaching beyond Switzerland from the 1930s, the fame of the orchestra later attracted guest conductors including Bruno Walter, Wilhelm Furtwängler, Ernest Ansermet, Hans Knappertsbusch, Ferenc Fricsay, Rafael Kubelík, Günter Wand, Kurt Sanderling, Horst Stein, Yuri Ahronovitch and Eliahu Inbal.
She was unfailingly critical of the great Czech conductor Rafael Kubelík, described Janáček's orchestral work Taras Bulba as "trash" and even called Bartók's classic Music for Strings, Percussion and Celesta a "potboiler".
Krapp has performed throughout Europe, America and Japan as a concert organist and was worked with renowned conductors such as Rafael Kubelik, Georges Pretre, Colin Davis, Lorin Maazel, Vladimir Fedoseyev, Horst Stein and Christoph Eschenbach.
One of his signature roles was David from Die Meistersinger von Nürnberg, which is confirmed by the number of times he recorded the role, including with Herbert von Karajan (1951), Rudolf Kempe (1951 and 1956), Hans Knappertsbusch (1952), Hans Rosbaud (1955), and Rafael Kubelík (1968).
One of his greatest and most acclaimed recordings was that of the great masterwork of Hans Pfitzner, Palestrina, which he recorded under the baton of Rafael Kubelik.