الاصلي: Method for Slide Trombone in B-flat. If I were limited to one etude book on the proverbial desert island, this would be it. Advanced.
ترجمة: طريقة لالترومبون الشرائح في B-شقة. أوتو Langey. الموسيقى ورقة الترومبون. متقدم. Method for Slide Trombone in B-flat composed by Otto Langey.