Instrumental Duet Cello,Double Bass,Instrumental Duet - Level 2 - Digital Download SKU: A0.744280 Composed by Miriam Troxler. 20th Century,Instructional,Standards. Score and parts. 2 pages. Miriam Troxler #4274559. Published by Miriam Troxler (A0.744280). Duet in the key of C for two bass clef instruments.