Oppitz and O'Conor had both been outstanding participants of Kempff 's masterclasses and were personally closely connected with Wilhelm Kempff .
After his death in 1991 , Gerhard Oppitz taught the courses from 1992 -- 1995 , followed by John O'Conor until 2011 and from 2013 onwards Bernd Goetzke .
Gerhard Oppitz and John O'Conor had both been outstanding participants of Kempff 's masterclasses and were personally closely connected with Wilhelm Kempff .
After his death in 1991 , Gerhard Oppitz taught the courses from 1992 -- 1995 , followed by John O'Conor until 2011 and from 2013 onwards Bernd Goetzke .