Trombone Duet Trombone - Level 5 - Digital Download SKU: A0.792465 Composed by Reinhold Moritzovich Gliere. Arranged by Ralph Sauer. 20th Century,Concert,Romantic Period. Score. 12 pages. Gordon Cherry #4988157. Published by Gordon Cherry (A0.792465). The Ten Duos for Cellos of Op. 53 are fertile ground for this new arrangement.   Ralph Sauer has chosen five of the pieces (12 minutes of music) that are suitable for two Trombones. Both parts have an equally wide range (high D to low C) with liberal use of the valve register. However, alternative octaves are provided  for those without an F-attachment. For advanced performers, the Duos present a technical challenge for both players, are musically rewarding and worthy of recital material.