Von Fotothek_df_roe-neg_0002792_002_Portrait_Dmitri_Dmitrijewitsch_Schostakowitchs_im_Publikum_der_Bachfeier.jpg: Roger & Renate Rössing, credit Deutsche Fotothek.derivative work: Improvist (talk) – Fotothek_df_roe-neg_0002792_002_Portrait_Dmitri_Dmitrijewitsch_Schostakowitchs_im_Publikum_der_Bachfeier.jpg, CC BY-SA 3.0 de, https://commons.wikimedia.org/w/index.php?curid=14401692