Instrumental Duet Double Bass,Instrumental Duet,Violin - Level 1 - Digital Download SKU: A0.648489 Composed by Leopold Mozart. Arranged by Nick Lacanski. Classical,Concert,Instructional,Standards. Score and parts. 5 pages. Theupperstaff #3486071. Published by theupperstaff (A0.648489). A duet arrangement from the piano repertoire that sounds great for strings.