He has collaborated with the choir MarkusChor Hannover and the Staatsorchester in concerts and services .
Diwiak sang the part of the Evangelist in Bach 's Passions also in Moscow , France , Syria and Israel , among others .
Diwiak has collaborated with the choir MarkusChor Hannover and the Staatsorchester in concerts and services .
Diwiak sang the part of the Evangelist in Bach 's Passions also in Moscow , France , Syria and Israel , among others .