On behalf of the Stadttheater Giessen and other clients, Herbert Gietzen rearranged a number of works for various instrumentations, including
John Psathas: Corybas
Aegean
(from Piano Trio to large orchestra
Gregori Frid: Das Tagebuch der Anne Frank
(from solo piano to a chamber ensemble of 4 instruments)
Vincenzo Bellini: Zaira
(from large orchestra, corona conditioned, to a version
for 13 instruments)