الاصلي: Boris Blacher. Two Concertos For Piano and Orchestra in Variable Metres Op.42. Two Pianos. Sheet Music. Two Pianos. 2PF.
ترجمة: بوريس Blacher. Two Concerts in variable metres for Piano and Orchestra from 1952, by Boris Blacher. اثنين بيانو. ورقة الموسيقى.