Original: 50 Etudes, Op. 6. Arranged by Oscar Franz. C. Kopprasch. Horn sheet music. 50 Etudes, Op. 6. Horn. Composed by C. Kopprasch.
Traducere: 50 Etudes, op. 6. Partituri Horn. 50 Etudes, op. 6. Corn. Compus de C. Kopprasch. Pentru Horn, Brass. Corn. Solos alamă.