Instrumental Duet Bassoon,Clarinet,Instrumental Duet - Level 4 - Digital Download SKU: A0.533240 Composed by Johann Sebastian Bach. Arranged by Paul Wehage. Baroque,Concert,Standards. Score and parts. 47 pages. Musik Fabrik Music Publishing #2151093. Published by Musik Fabrik Music Publishing (A0.533240). Four canons from Bach's monumental work. The four canons are: 1. Canon at the Octave (Contrapunctus XII)2. Canon at the Tenth (Contrapunctus XIV)3. Canon at the 12th (Contrapunctus XIII)4.Canon for Augentation in contrary motion (Contrapunctus XV)